Most advice about advertising is written as though the answer stays put.
It doesn’t. You can run the two-point test in March, get a comfortable yes, build a year around it, and be quietly wrong by the following March — without a single thing going obviously wrong in between.
So here’s the one property of the calculation nobody warns you about: it decays.
Two forces, pulling opposite ways
Your maximum and the market price are both moving, all the time, and they are not moving together.
What pushes your maximum up. You optimize the campaigns. You fix the phone. You improve the offer. You raise a price. Each of those lifts the most you can afford to pay, and they compound — a better close rate multiplies through everything downstream of it. A business that works at this deliberately looks meaningfully different six months to a year later. Not marginally. Meaningfully.
What pushes the market price up. Ordinary inflation, and something worse: media inflation. Your competitors get better at this too. New ones arrive. Everyone’s willingness to pay per thousand impressions and per click drifts upward, year after year, and the auction reflects it.
Neither force asks your permission. The question is only which one is winning in your account, and the answer changes.
The sentence that should worry you
The price of a click tends to rise over time. A business that doesn’t improve eventually can’t afford its own customers.
Read that as a mechanism rather than a warning.
Nothing has to go wrong for a healthy business to become unadvertisable. No mistake is required. Keep your prices where they are, keep your close rate where it is, keep your website as it is — do nothing wrong at all — and the market will walk past you. The gap between your maximum and the market price narrows on its own, and one year it closes.
Most businesses that get pushed out of a channel weren’t outmanaged. They stood still in a room that was moving.
Which is why the yes has an expiry date
The two-point test gives you an answer about a moment. Treat it as a standing verdict and it will mislead you.
Run it again once a year. It costs an evening — the same evening it cost the first time, and by then you’ll have real numbers instead of assumptions, so it’ll be faster and more accurate. Our maximums calculator does the arithmetic in about two minutes once you have the seven inputs.
Three things to look at when you do:
Has the market price moved? Check what competitors are paying now, not what they were paying when you started. This is the number most owners never look at twice.
Has your maximum moved? Recompute from your actual last twelve months — your real average job, your real margin, your real close rate. Not the numbers you used last year, and not the numbers you’d like.
Is the gap wider or narrower than it was? That direction matters more than either figure. A narrowing gap in a profitable year is the earliest warning you will ever get, and it arrives while you still have room to act.
What actually raises the maximum, in order
If the gap is narrowing, here’s what to reach for — in ascending order of power, which is roughly descending order of how often they get attempted.
1. The campaigns. Real money, and the fastest to collect — a lead at ninety-six dollars became a lead at twenty-two in three weeks in one account. But it’s bounded. Once an account is genuinely well run, there is no second act. You can only pay what the auction charges.
2. The sales process. Bigger, and almost always available, because almost nobody’s is as good as they think. Every point of close rate multiplies straight through to what you can pay for a click. The phone, the callback speed, the second attempt, the person who answers.
3. The offer. What you sell, for how much, with what guarantee, at what price point. Raising a price raises the maximum proportionally and is the move owners resist hardest — usually because it feels like it costs customers, and usually because the customers it costs were the unprofitable ones.
4. A new channel, early. When a platform or format appears and nobody is competing on it yet, there’s a window where attention is cheap. That window is real and it’s worth taking. It’s also narrow, unpredictable, and not a strategy — new channels don’t arrive on a schedule, and building a plan around one is planning around weather.
5. The product itself. The strongest lever there is, and the one that almost never appears in a marketing conversation.
Why the product is the strongest lever
Two businesses moved their whole economics by changing what they sold. Neither change had anything to do with advertising.
One remodeler was losing every budget-conscious customer to price, because a tiled bathroom is a premium product in the US — not because of the tile, but because installing it is slow and skilled labor is expensive. They started offering finished bathrooms built on panels instead. Cheaper for the customer, far faster to install.
Watch what that did. The average job fell. The margin percentage held. The maximum per click barely moved — because the close rate rose to meet it, as a customer who couldn’t afford the tiled version says yes to this one. What actually changed was the size of the market they could serve, and how many projects fit into a crew-month.
Another took on a decking material that termites can’t eat and water can’t soak, in a climate that destroys ordinary wood in a few years. That one lowered material cost, raised durability, and created a new reason to buy that no competitor could match. Both stories in full.
Here’s the part worth keeping. A change like that gives you a choice, and the choice is genuinely strategic: you can pass the gain to the customer as a lower price and take more volume, or hold the price and take more margin. The first widens your market. The second raises your maximum. Both are legitimate. What isn’t legitimate is drifting into one without deciding.
And notice that neither of those improvements would ever have surfaced in a conversation about campaigns. They came from the arithmetic — from asking which input was holding the maximum down, and following the answer out of the ad account and into the business.
There is a floor, and you will find it
One honest limit, because this would otherwise read like improvement is infinite.
It isn’t. Leads do not get cheaper forever. At some point your account is genuinely well run, your close rate is genuinely good, your offer is competitive, and the remaining improvements are small and expensive.
That’s not failure. It’s a business operating properly. The point of knowing where the floor is: once you’re near it, further effort belongs somewhere else entirely — capacity, a second market, a different service line, an adjacent trade. Not in squeezing another three percent out of a mature ad account.
Once the model is proven in one market, copying it into a second is a much better use of energy than perfecting the first.
What to do on Monday
The whole method, compressed into what fits on one page.
Once, now: pull twelve months of numbers. Compute your maximum — per customer, per lead, per click — for each service line that has different economics. Find out what the market charges. Compare.
If your maximum is above the market, work out what volume your economics actually need, check that your crews can perform it and that the demand exists, and go.
If it isn’t, don’t advertise yet. Go and find which conversion step is dragging the maximum down — it’s usually the phone — and fix that first. That work pays whether or not you ever run an ad.
In month one, don’t measure profit. Measure whether your assumptions held, and which side of the table missed.
Every week after that, someone looks, cuts and reallocates. Not once a month. Weekly.
Once a year, run the two points again, because the market moved even if you didn’t.
The last thing
One idea, plainly:
Advertising is a catalyst. It doesn’t decide what your business produces — it decides how fast you get there. A sound business advertises and grows. A business losing money on every job advertises and loses money faster, and then blames the channel.
So the question was never should I advertise. It was always what am I about to accelerate — and that’s a question about your business, answerable with arithmetic you already know, in an evening, before you spend anything.
Win in the spreadsheet first. The full method is in the book.
Frequently asked questions
- Why does my cost per click keep going up?
- Two things push it, and neither asks your permission. Ordinary inflation, and media inflation — your competitors get better at this too, new ones arrive, and everyone's willingness to pay per click drifts upward year after year. Meanwhile your own maximum moves for its own reasons. The question is never whether click prices rise; it's which of the two forces is winning in your account. Most businesses that get pushed out of a channel weren't outmanaged. They stood still in a room that was moving.
- How often should I redo my marketing math?
- Once a year, minimum. Run the two-point test again — it costs an evening, the same evening it cost the first time, and by then you'll have real numbers instead of assumptions so it'll be faster and more accurate. Check three things: has the market price moved (what competitors are paying now, not when you started — the number most owners never look at twice), has your maximum moved (recompute from your actual last twelve months, not the numbers you used last year and not the ones you'd like), and is the gap wider or narrower. That direction matters more than either figure.
- What actually raises the most I can pay for a click?
- Five levers, in ascending order of power and roughly descending order of how often they get attempted. The campaigns: real money and fastest to collect — one account went from a $96 lead to a $22 lead in three weeks — but bounded, because once an account is genuinely well run there's no second act. The sales process: bigger and almost always available, because every point of close rate multiplies straight through. The offer: raising a price raises the maximum proportionally. A new channel early, while attention is still cheap. And the product itself, which is the strongest and almost never appears in a marketing conversation.
- Why is changing the product the strongest marketing lever?
- Because it moves inputs no campaign can touch. One remodeler swapped slow tiled bathrooms for finished panel bathrooms: the average job fell, the margin percentage held, the maximum per click barely moved — but the close rate rose to meet it and the market they could serve got bigger, with more projects fitting into a crew-month. Another took on a decking material termites can't eat in a climate that destroys wood, which lowered material cost, raised durability and created a new reason to buy. Neither change would have surfaced in a conversation about campaigns. They came from asking which input was holding the maximum down.
- Do leads keep getting cheaper forever?
- No, and pretending otherwise wastes effort. At some point your account is genuinely well run, your close rate is genuinely good, your offer is competitive, and the remaining improvements are small and expensive. That's not failure — it's a business operating properly. The point of knowing where the floor is: once you're near it, further effort belongs somewhere else entirely. Capacity, a second market, a different service line, an adjacent trade. Not in squeezing another three percent out of a mature ad account.