The 90-Day Proof Plan: How to Choose a Lead Generation Agency That Pays Off

A lead generation agency pays off only when its fully loaded cost per attended sales call sits below your breakeven ceiling: gross profit per sale × close rate × the share of gross profit you will spend to win a customer. At $3,600 gross profit, a 25% close rate and a 30% share, that ceiling is $270 per attended call.

At a glance

• Five agency models: paid-media, outbound/SDR, lead seller, appointment-setting, and pay-per-result full-funnel.
• Five pricing models: monthly retainer, pay per lead, pay per appointment, revenue share, or a mix.
• The number to judge on: fully loaded cost per attended sales call, compared with your own breakeven ceiling, not cost per lead.
• The 20-point agency scorecard: ten questions, 0–2 points each. 15+ shortlist, 10–14 negotiate, under 10 walk away.
• The 90-day proof plan: setup by day 14, first conversations by day 30, a measured cost per attended call by day 60, a keep-or-exit decision at day 90.
• Compliance stays with you: the US FTC and Australia’s ACMA hold the business that commissions outreach responsible alongside the agency.

What a lead generation agency is (and what it is not)

A lead generation agency is an outside firm paid to create sales opportunities for your business: enquiries, qualified prospects, or booked conversations with buyers. You hire it to run work your own team would otherwise do, usually some mix of advertising, outbound prospecting, follow-up and booking.

It is not a list vendor, which sells contact data and does no outreach, nor a marketing agency optimising for reach or traffic. The contract will reward whatever the agency is paid for.

• What you are buying (data, leads, qualified leads, booked or attended appointments) is mapped in our guide to lead generation services. This page covers who you hire and how you hold them to it.
• If you are hiring locally, our city pages cover the practicalities for a lead generation agency in Sydney and other Australian cities.

The quotable version: a lead generation agency is defined by the outcome it is paid for, not by the channels it uses.

How it works

How to choose a lead generation agency

01

Set your breakeven ceiling

Multiply gross profit per sale by close rate and the share you will spend to win a customer. That is the most an attended call can cost.

02

Score three agencies

Ask each the same ten questions and score every answer 0 to 2. Shortlist at 15 points or more.

03

Contract the unit

Write down what counts as a lead or appointment, exclusivity, no-show handling and what you keep on exit.

04

Run the 90-day proof

Setup by day 14, first calls by day 30, cost per attended call by day 60. Keep or exit at day 90.

The five kinds of lead generation agency

Most firms calling themselves a lead generation agency fall into one of five operating models, and the model predicts where your money will leak. The table compares them on who does the work after the enquiry lands, because that hand-off is where most paid-for leads are lost.

Agency model	What it does	Usually paid by	Who works the lead after it arrives	Wrong for
Paid-media agency	Runs Google, Meta or LinkedIn ads that produce form fills	Monthly retainer or % of ad spend	You	Teams that cannot call a new lead within the hour
Outbound or SDR agency	Builds lists and runs cold email, calling or LinkedIn	Retainer per SDR seat, sometimes plus meeting bonuses	The agency until a meeting is set, then you	Offers with a small, hard-to-reach buyer pool
Lead seller or marketplace	Sells enquiries generated on its own sites or forms	Per lead	You, often in competition with other buyers of the same lead	High-ticket sales that need a single, trusted conversation
Appointment-setting agency	Contacts, qualifies and books prospects you supply or it sources	Per appointment, retainer, or both	The agency up to the booked call	Businesses with very low lead volume, where a setter sits idle
Pay-per-result full-funnel agency	Runs acquisition, follow-up, booking and reminders as one system	Revenue share, per appointment, or a mix	The agency up to the held call	Businesses that cannot track sales back to source

The further the agency’s responsibility runs towards the held call, the higher its unit price, because it is pricing in the work and the failures in between. An agency paid by retainer or ad spend has no direct stake in whether leads become sales; that is not dishonest, but it has to be managed with measurement.

How lead generation agencies charge

Lead generation agencies use five pricing structures, and the useful question about each is what it pays the agency for. Our guide to performance-based lead generation covers the models in depth; this is the incentive test in one list.

• Monthly retainer pays for activity and time. You carry the result risk. It suits slow, hard-to-attribute work such as SEO.
• Pay per lead pays for an enquiry. The agency is rewarded for volume, so the lead definition is everything.
• Pay per appointment pays for a booked or attended call. The agency carries contact, qualification and booking risk.
• Revenue share pays a percentage of sales. Both sides carry the close; it needs clean attribution.
• A mix (a smaller fixed fee plus a performance component, or per appointment plus a revenue share) splits the risk.

Performance pricing usually costs more per unit than a well-run retainer, because the agency is pricing in the campaigns that fail. The honest comparison of the two is in pay-per-result vs retainer agencies. Whichever you choose, convert the quote into one number before comparing: cost per attended sales call.

What you can afford to pay a lead generation agency: the breakeven ceiling

The breakeven ceiling is the most a lead generation agency can cost you per attended sales call before the channel loses money. It is a decision rule built from three of your own numbers, so no agency benchmark is needed to calculate it.

1. Gross profit per sale = average sale value × gross margin.
2. Acquisition budget per sale = gross profit per sale × the share you are willing to spend to win a customer.
3. Ceiling per attended call = acquisition budget per sale × close rate on attended calls.
4. Ceiling per booked call = ceiling per attended call × show rate.
5. Ceiling per lead = ceiling per booked call × lead-to-booked rate.

Worked through below with assumptions, not benchmarks: a $6,000 average sale at 60% gross margin ($3,600 gross profit), a 30% acquisition share ($1,080 per sale), a 75% show rate and a 20% lead-to-booked rate. Close rate is shown in three bands because it moves the answer most. Replace every input with your own.

Ceiling	Close rate 15%	Close rate 25%	Close rate 35%
Per attended call ($1,080 × close rate)	$162.00	$270.00	$378.00
Per booked call (× 75% show rate)	$121.50	$202.50	$283.50
Per lead (× 20% lead-to-booked)	$24.30	$40.50	$56.70

The same business can afford more than twice as much per call at a 35% close rate as at 15%. So the first number to know is not the agency’s price but your own close rate.

How do I choose a lead generation agency? The 20-point scorecard

The 20-point agency scorecard turns a sales meeting into evidence. Ask each lead generation agency the same ten questions and score each answer 0, 1 or 2. Fifteen or more: shortlist. Ten to fourteen: negotiate the weak rows into the contract. Under ten: walk away, however good the pitch.

#	Question	2 points	0 points
1	What exactly counts as a lead, qualified lead or appointment?	A written definition with qualifying criteria	“We’ll agree that as we go”
2	What results have you produced for businesses like mine, and across how many accounts?	Figures with the number of accounts and the period	One standout case study, no denominator
3	What is your median time to first contact on a new enquiry, in minutes?	A figure from their own system	“Very fast”
4	What is your show rate, and what happens to a no-show?	A measured rate, and a stated no-show policy	No show-rate tracking
5	Are leads exclusive to us?	Yes, in writing	Evasive, or “mostly”
6	What do we keep if we leave: data, recordings, numbers, scripts?	A written exit list	“The data is ours”
7	What is the notice period and minimum term?	Short notice, no long lock-in	12 months, auto-renewing
8	Which laws do you work under in each market, and how is consent recorded?	Names the rules and shows a consent record	“We’re compliant”
9	Can we see live data, not just a monthly report?	CRM or dashboard access	PDF once a month
10	What exactly are you paid for?	The unit closest to your sale	Activity: hours, emails sent, impressions

A score of 1 is a partial answer, such as a definition offered only verbally. In high-ticket sales, weight questions 2 and 10 most: a figure with no denominator cannot be compared, and the pay unit decides whose problem a bad month is. Write your qualifying criteria into question 1 before the first meeting.

Contract terms to get in writing before you sign

A lead generation agency contract should define the unit, the exit and the compliance duties in plain terms, because each is where disputes start. The list below is general information, not legal advice; have your own lawyer read the agreement.

1. The unit definition. What counts as a lead, qualified lead and appointment, and the evidence for each (a recording, a form entry, a calendar event).
2. Exclusivity. Whether a lead or appointment is sold or offered to anyone else.
3. No-show and cancellation handling. Charged, not charged, or rebooked, stated before the first invoice.
4. Attribution. How a lead that also touched your own ads is credited, so you are not billed twice.
5. Data and assets on exit. Contact history, suppression lists, recordings, phone numbers and sender IDs. Our page on what you own when you leave a lead gen vendor goes asset by asset.
6. Term and notice. Minimum term, notice period and any auto-renewal.
7. Compliance clauses. Australia’s Do Not Call Register guidance says anyone contracting a third party to telemarket for them must include express provisions requiring compliance with the Act. Written obligations are sensible in every market.

Red flags when hiring a lead generation agency

These red flags show up before you sign, when they are cheapest to act on. One flag is a question; three is a reason to keep looking.

• A guaranteed number of sales. An agency can control contact, booking and reminders. It cannot control your offer, your price or your closer.
• Testimonials you cannot trace. Ask to speak to a named client. In the US, the FTC’s 2024 final rule on fake reviews and testimonials prohibits creating or selling fake or false reviews and testimonials, and buying or disseminating them when a business knew or should have known they were fake or false.
• Leads that may be shared. A lead sold to four businesses goes to whichever one calls first. Do not assume exclusivity; get it in writing.
• Long lock-ins before any proof. A 12-month minimum before a single attended call is a bet you make alone.

The quotable line: a lead generation agency that will not be measured at the attended call is asking to be measured on its own terms.

What to measure in the first 90 days: the 90-day proof plan

The 90-day proof plan is a working decision rule for judging a new lead generation agency against your breakeven ceiling, not an industry benchmark. Week two is too early to judge; month six is too late to find out.

Window	What should exist	Continue if	Escalate or exit if
Days 1–14	Written unit definition, tracking to the attended call, lists washed and consent records set up, scripts approved	All four done by day 14	Setup still incomplete at day 21
Days 15–30	First two-way conversations and first booked calls at low volume; rejection reasons logged	Booked calls exist and you have reviewed recordings	No two-way conversations by day 30
Days 31–60	Volume rising; cost per attended call measured for the first time	At or under 1.5× your ceiling and falling	Over 2× your ceiling with no downward trend
Days 61–90	A keep-or-exit decision on real numbers	At or under your ceiling, or within 1.25× with improving close data	Over 1.5× your ceiling at day 90: renegotiate the unit or exit

A retainer agency needs this table most, because it is paid either way. If results are poor, check your own side of the hand-off before blaming the agency: our page on what to do when an agency is not delivering results separates the two.

Worked example: comparing two lead generation agency quotes

This worked example compares a retainer quote with a per-appointment quote. Both agencies and every input are hypothetical assumptions, not market prices and not LeadsNow figures. The ceiling is the mid band above: $270 per attended call.

Line	Agency A: retainer + ads, you work the leads	Agency B: fee per attended call
Monthly cost	$4,000 retainer + $6,000 ad spend	$220 per attended call (hypothetical)
Leads produced (assumption)	150	Not your concern
Booked at 20%, shown at 75%	30 booked, 22.5 attended	20 attended (assumption)
Your team’s hours	150 leads × 6 attempts × 4 minutes = 60 hours × $45 = $2,700	Near zero before the call
Total cost	$12,700	$4,400
Cost per attended call	$564	$220
Against the $270 ceiling	Fails by $294	Passes by $50

• The hours line decides Agency A. Without the $2,700 of internal time, A costs $444 per attended call, still over the ceiling. Most buyers leave that line out.
• Close rate decides both. At a 15% close rate the ceiling falls to $162, and Agency B fails too. A low close rate is a sales problem no lead generation agency can fix by sending more calls.
• A can win. With a faster team and cheaper leads, the retainer model can beat a per-appointment fee. Run your own numbers.

Compliance: what you keep when a lead generation agency calls or texts for you

Hiring a lead generation agency does not transfer your legal exposure for the outreach it does in your name. The rules differ by country; this is general information, not legal advice.

• United States: the FTC’s Telemarketing Sales Rule guidance says sellers and telemarketers must remove National Do Not Call Registry numbers from call lists at least every 31 days, prohibits calls before 8 a.m. or after 9 p.m., and sets civil penalties of up to $53,088 per violation. Most business-to-business calls are outside the rule, with exceptions. Our Do Not Call compliance guide covers operations.
• United Kingdom: the ICO says the PECR email and text rule does not apply to corporate subscribers, but sole traders and some partnerships count as individuals, and UK GDPR still applies in a business context.
• Australia: under the Spam Act 2003, the ACMA says a business that buys or uses a marketing list is still responsible for having consent for every address, and messages sent on your behalf must identify you. The Do Not Call Register guidance says both the telemarketer and the business that commissions the calls must comply.

The practical test: ask to see one consent record and one list-wash log before the agency contacts anyone in your name.

What I’d fix first before hiring a lead generation agency

If I were about to hire a lead generation agency, I would spend a fortnight on my own numbers first. In order:

1. My close rate on held calls. I would get to at least 30 held calls with a known outcome. Without it, the breakeven ceiling is a guess and every quote looks plausible.
2. My breakeven ceiling. I would write the ceiling per attended call on one line and bring it to every meeting.
3. Who owns the first contact. If nobody on my team can reach a new enquiry within the hour, I would not hire an agency that hands me raw leads.
4. The scorecard. Only then would I run three agencies through the 20 questions and give the best scorer a 90-day proof plan.

The agencies that welcome the scorecard are usually the ones worth hiring.

How LeadsNow applies the agency scorecard

LeadsNow is a pay-per-result lead generation agency, the fifth model in the table above. Here is how we answer the scorecard’s evidence questions, with the figures we publish.

• Volume (question 2): 50,769+ AI-booked sales appointments since 2017 and 1M+ leads generated.
• Show rate (question 4): varies by offer and reminder cadence, up to 93% on our best-performing accounts. No-shows aren’t charged.
• Sales lift: a 7x average sales lift, defined on our methodology page, which also discloses that the median is closer to 4x.
• Evidence you can check: 24 filmed client case studies and a 4.6 rating from 43 Google reviews.
• What we are paid for (question 10): results, not activity: a revenue share, a fee per appointment, or a mix of both.

The scorecard also says when we are the wrong choice. If your team already reaches new leads within the hour, books them well and has a strong show rate, a paid-media agency on a retainer may give you a lower cost per attended call.

LeadsNow: a pay-per-result way to put this into practice

LeadsNow books sales calls onto your calendar using AI calling, SMS and DM follow-up, and runs as much of the funnel before the call as you want to hand over. Pricing is 5–25% of the revenue we generate for you (revenue share), or an equivalent pay-per-appointment fee, or a mix of both. Where a business lands depends on lead volume, what is being sold and its price, the type of product and business, and which part (or all) of the sales funnel we run.

• No retainer.
• No-shows aren’t charged.
• Bad ad creative, bad lists and the cost of contacting the thousands of people who never book are our cost, not yours.
• Cancel any time with 14 days notice.

The service itself is described on our AI appointment setting page, and the model is set out on the pricing page.

Sources

1. US Federal Trade Commission, Complying with the Telemarketing Sales Rule.
2. US Federal Trade Commission, Federal Trade Commission announces final rule banning fake reviews and testimonials, 14 August 2024.
3. US Court of Appeals for the Eleventh Circuit, opinion in No. 24-10277, 24 January 2025 (vacating Part III.D of the FCC’s 2023 Order, including its one-to-one consent restriction).
4. UK Information Commissioner’s Office, Business-to-business marketing.
5. Australian Communications and Media Authority, Avoid sending spam.
6. Do Not Call Register (ACMA), Industry FAQs.

Frequently asked questions about lead generation agencies

How much does a lead generation agency cost?

It depends on the pricing model: retainer, per lead, per appointment, revenue share or a mix. Across the market a booked sales call costs $30–$400+ depending on industry, offer, price and many other variables. Compare every quote as a fully loaded cost per attended call against your own breakeven ceiling.

How long should I give a lead generation agency before judging it?

About 90 days. Setup should be finished by day 14, first booked calls should exist by day 30, and by day 60 you should have a measured cost per attended call. If it is still over 1.5 times your breakeven ceiling at day 90, renegotiate the unit or exit.

Are leads from a lead generation agency exclusive?

Not by default, so get exclusivity in writing. In the US, the Eleventh Circuit vacated Part III.D of the FCC’s 2023 Order in January 2025, which said a consumer could consent to telemarketing robocalls and robotexts from only one entity at a time. The court held that one-to-one consent is not required for prior express consent under the TCPA, and shared leads remain common.

Who is responsible if a lead generation agency breaks telemarketing rules?

Usually both of you. The FTC’s Telemarketing Sales Rule guidance applies its Do Not Call provisions to sellers and telemarketers alike, with civil penalties of up to $53,088 per violation. In Australia, both the caller and the business commissioning the calls must comply with the Do Not Call Register legislation.

Can I trust a lead generation agency’s reviews and case studies?

Trust the ones you can check: named clients you can speak to, figures with a number of accounts and a period. In the US, the FTC’s 2024 final rule prohibits fake or false reviews and testimonials, including AI-generated ones, and lets the agency seek civil penalties against knowing violators.