What It Costs to Get a Customer Online: A Simple, Honest Calculation

In plain words: cost per customer is how much you spent on ads and your site, divided by the number of customers you got. If you spent $1,000 and got 10 customers, one customer cost $100. It takes two minutes and instantly shows what works and what’s burning your budget. Here’s how to calculate it and how to make each customer cheaper.

Why every owner should know this

Without this number you can’t tell if your ads are profitable. You can get 100 enquiries and go broke on them, or 20 and make good money. You count not enquiries, but cost per customer and what they brought you.

The math on a simple example

You run a stretch-ceiling company. For the month:

Item	Amount
Google and social ads	$900
Website (spread over the month)	$150
Total spend	$1,050
Enquiries received	40
Became customers (1 in 4)	10
Cost per customer	$105
Average order	$1,200
Revenue from 10 customers	≈ $12,000

A $105 customer brings $1,200 — the ads pay back many times over. Now let’s see how to bring that $105 down.

How a website lowers cost per customer

Three simple mechanisms:

• More enquiries from the same visitors. A clear page with a price and a button gets more enquiries than a “pretty but confusing” one.
• Free traffic from search. Ads stop when the money stops. A site found on Google brings customers free for months.
• Fewer lost enquiries. When an enquiry lands with you instantly and you reply fast, you don’t throw away customers you already paid to attract.

How to lower cost per customer: what actually works

When a “cheap customer” is a trap

A low cost per enquiry isn’t always good news. If there are many enquiries but they’re junk (wrong city, just ask the price and vanish) — you’re paying for air. Fewer, ready-to-buy enquiries beat many empty ones. That’s why a site that explains what you do, and a fast reply that qualifies, both matter.

Bottom line

Cost per customer is the simplest and most important number in small-business marketing. Count it, improve your site and reply speed, invest in search — and each customer will cost you less while the business grows without bloating your ad budget.

Work out your cost per customer → — we’ll look at your numbers and show where money leaks and how to lower the price of an enquiry. Read next: the sales funnel in plain words and how a website affects sales.