Performance
Part of Native advertising economics
Setting a maximum acquisition cost for native traffic
Derive an all-in acquisition ceiling from customer contribution, allow for production costs, and translate the remainder into a traffic limit.
Set a maximum all-in cost per acquired customer from the contribution that customer is expected to generate in a stated period, minus the contribution the business must retain. Allow for production and measurement before setting a media limit. Your own margins and conversion rate determine the result, not a general native advertising benchmark.
Define the acquisition and value period
Decide whether the outcome is a first purchase, an attended appointment or another completed action. A lead and a paying customer are different outcomes.
If you buy traffic for leads, estimate eventual customer value from your own evidence on lead quality and close rates; do not treat every enquiry as a full sale.
State the period used to estimate value. First-order contribution may suit an initial test.
Include expected repeat purchases only with a stated period and defensible assumptions. A forecast of later value does not by itself pay for today's campaign.
Derive the all-in ceiling
From revenue attributable to a new customer in the chosen period, deduct the variable costs of supplying the product or service and other directly attributable costs. This gives contribution before acquisition. Subtract the contribution the business requires after acquisition:
Maximum all-in acquisition cost = contribution before acquisition − required contribution after acquisition.
Apply any tighter cash-flow or payback limit the business has set. If the calculation is zero or negative, the stated economics provide no allowance for acquisition spend.
Convert it into a media limit
For illustration, suppose a customer contributes A$80 before acquisition and the business requires A$30 afterwards. The all-in acquisition ceiling is A$50.
If allocated production and measurement are expected to cost A$5 per acquired customer, the media allowance is A$45 per customer.
If one in twenty valid native landing visits becomes a customer, the assumed visit-to-customer rate is 5%. The maximum media cost per valid visit is therefore A$45 × 5% = A$2.25.
This is not automatically a safe bid per ad click: clicks and valid landing visits can differ, and conversion rates vary by source, placement and offer. All amounts and rates here are illustrative.
During a capped test, recalculate with observed inputs. Fewer customers spread production cost across a smaller denominator; a lower conversion rate reduces the affordable visit cost. Keep spend and customer count on comparable dates, and use a stated attribution rule.
Engaged visits and lead quality can help diagnose performance, but they do not replace the acquired-customer calculation.
