Cost per lead comes down to two factors: how much you pay per visit and what share of visits turns into a lead. You can lower it from both sides, but the impact isn't comparable: working on quiz conversion almost always does more than haggling over bids, and it costs less.
Let's go through the order of work: where to start, what to tackle next, and what not to do.
First, figure out where the cost is
"Our leads are expensive" isn't a diagnosis. There are three causes, and each is fixed differently:
- Expensive traffic. Clicks cost a lot while conversion is normal. Work on campaigns and keywords.
- Low quiz conversion. Clicks are cheap, but only a few become leads. Work on the quiz, and this is the cheapest route.
- Unqualified leads. On paper the cost per lead is low, but there are no sales. The real cost of a useful lead can be much higher than it looks.
The third case is the trickiest: the report looks fine and the business doesn't. That's why it pays to calculate not just the cost of a lead but the cost of a lead that reached a sale.
Step 1. Clean out unqualified traffic
This is the fastest saving and almost always the biggest. You stop paying for people who won't become customers no matter what quiz you show them.
- Build a negative keyword list from the search terms report: "DIY," "free," "jobs," "reviews," "used," and so on.
- Turn off areas you don't serve.
- Cut searches with competitor brands unless you have a separate campaign for them.
- Separate Search and Display: the audience there has a different temperature and a different normal cost per lead.
Do this regularly in the first few weeks, not just once at launch. More detail in the article how to run Google Ads to a quiz.
Step 2. Align the ad with the quiz's first screen
The most common cause of expensive leads with normal traffic is a gap between what the ad promises and what the person sees after the click. You pay for every visit, and your conversions come from the few whose expectations happened to match.
The first screen's headline should continue the ad, ideally in the same words. If your ads promise different things, they need different first screens. What works there is covered in which quiz first screen converts best.
Step 3. Lift the quiz's own conversion
This is where the main reserve is: doubling conversion cuts your cost per lead in half on the same ad spend.
- Cut questions down to the necessary ones. Every extra step costs part of the audience. The benchmark is 4–6 questions.
- Find the step where everyone drops off. There's usually one specific question that breaks the funnel: confusing or asked too early.
- Strengthen the offer on the final step. "Submit request" is not a reason to leave a phone number.
- Remove extra form fields. Phone, email, and messenger all at once are three reasons to back out.
To find the weak spot, use the checklist in how to tell if your quiz is underperforming.
Step 4. Filter out unqualified people inside the quiz
This raises cost per lead in the report and lowers it in reality, because you stop counting things that aren't leads as leads.
Add questions that filter by area, volume, and timeline. People you can't help drop off on their own, and your rep doesn't waste a day on them. And review your offer: giveaways and huge discounts reliably attract cheap leads that never turn into sales.
Step 5. Set up analytics, because without it everything else is guesswork
You need a minimum: a conversion for the quiz form submission and UTM tags on your links. Without the first, the ad platform doesn't know what counts as success. Without the second, you see leads coming in but don't know which campaign brought them, and you can't turn off what's losing money.
How to connect the quiz to analytics is in the Google Analytics setup guide.
What not to do
- Start with bids. Lowering bids doesn't lower cost per lead; it lowers traffic volume, and often your ad positions with it.
- Change everything at once. After five simultaneous changes, there's no telling what worked.
- Draw conclusions from ten leads. That's noise, not data.
- Chase the lowest cost per lead. The cheapest leads are often the most useless.
- Keep reworking the quiz for no reason. Change what you've diagnosed, not things "to keep it fresh."
FAQ
Where do I start if leads are expensive?
With cleaning out unqualified traffic and aligning the ad with the quiz's first screen. These are the cheapest changes with the most visible effect. Bids come last.
What cost per lead is considered normal?
It depends on the niche and the average deal size; there's no universal number. The meaningful benchmark is how much you're willing to pay for a lead given your margin and your lead-to-sale conversion.
Will shortening the quiz lower my cost per lead?
Usually yes, if what you cut are unnecessary questions. But if you cut the questions that filter out unqualified people, leads get cheaper and sales don't go up.
What matters more, cost per click or conversion?
Conversion. It has a multiplier effect and it's in your hands, while cost per click is largely set by the auction.
How often should I review campaigns?
In the first few weeks after launch, regularly, as search terms pile up. After that, when your metrics change, not on a calendar.
