Most pricing conversations in lead generation start in the wrong place. Someone asks what the CPL is, someone else quotes a number, and both sides spend the next three months arguing about whether the leads were any good.
The pricing model matters less as a number and more as a statement about who carries the risk. Who pays when the creative flops? Who pays when the sales team takes two days to call back? Answer those two questions honestly and you’re most of the way to the right model.
CPM puts the risk on you
With cost per thousand impressions you’re paying for the chance to be seen. If the ad is weak, the audience is wrong or the landing page breaks on Android, the invoice doesn’t change. That isn’t a trick. It’s simply how media is sold at source, and it makes perfect sense when your own team runs the account and wants every lever in its hands.
It gets uncomfortable when you buy CPM through a partner who also controls the creative and the targeting. They decide what runs and you pay regardless of what happens next. If you go that way, ask for access to the ad account itself. A monthly PDF isn’t the same thing.
CPA moves the risk to the partner, sometimes too much of it
Cost per acquisition sounds like the fairest deal going. You pay when someone buys, signs or subscribes. The problem is that a lot of what decides whether a lead becomes a customer happens after the hand-off. How fast does sales pick up the phone? Does the price on the website match the price in the ad? Is the onboarding any good?
A partner paid on CPA ends up underwriting your sales process. The good ones price that risk in, so you pay a premium for it. The less good ones quietly narrow their targeting to the safest audience they can find, and your volume dries up without anyone saying why.
CPA works best when the conversion happens online, quickly and close to the click. Think ecommerce checkouts or app subscriptions. It’s a poor fit for anything with a phone call, a quote or a home visit in the middle.
CPL splits the work at a sensible point
Cost per lead draws the line where responsibility naturally changes hands. The partner is accountable for finding the right person and getting them to raise their hand. You’re accountable for what happens after that. Each side is paid on something it actually controls.
That only holds if “lead” means something specific. A name and an email address is a contact, not a lead. Before we quote a CPL we agree the fields, the geographies, any qualifying questions and the exclusions. It matters enough that we wrote a separate piece on how to define a qualified lead, because that’s where these deals usually succeed or fall apart.
A quick way to sanity check any CPL quote
Work backwards from revenue rather than forwards from media costs.
Say a customer is worth €1,200 to you in their first year, and roughly one in ten qualified leads ends up buying. Each lead is worth about €120 before you’ve spent anything. If you want to keep half of that as margin, your ceiling sits somewhere around €60 a lead.
Now compare quotes against that ceiling instead of against each other. A €25 lead that converts one time in forty costs you more than a €55 lead that converts one time in eight. Written down, that’s obvious. In practice we still see buyers pick the cheapest line on the spreadsheet and then wonder why the sales team has stopped calling.
What about hybrid deals?
They’re more common than people admit, and some of them are genuinely useful. A few we see work well:
- A base CPL with a bonus for leads that reach a later stage, such as a booked appointment.
- CPL for the first few months while conversion data builds up, then a review against CPA.
- A CPL with an agreed window for flagging leads that clearly fall outside the definition.
The thing to avoid is a hybrid that nobody can explain in one sentence. If it needs a spreadsheet to calculate the invoice, it’ll need a meeting to dispute it.
So which should you choose?
If you have an in-house media team and want full control, buy media on CPM yourself and keep the data. If your sale happens online within minutes of the click, CPA is worth exploring. If there’s a conversation, a quote or a call-back between the lead and the revenue, CPL is usually the cleanest arrangement for both sides.
That last case covers most of the brands we talk to, which is why we run our lead generation programmes on a cost per lead basis. Whichever model you pick, write the definitions down before launch. A pricing model is only ever as fair as the paperwork behind it.