A campaign can generate hundreds of orders and still lose money. For international CPA businesses and ecommerce brands, the problem arises when acquisition costs are assessed separately from what happens afterward: cancellations, failed deliveries, returns, and payment collection expenses.
Mixpanel’s ecommerce benchmarks highlight acquisition efficiency, customer value, and acquisition payback periods as growth priorities. Turning these priorities into decisions requires knowing how much you can afford to pay for a sale that actually generates a margin.
1. Define Exactly What You Are Paying For
In performance marketing, a conversion may represent a submitted form, a confirmed order, or a purchase. These events have different economic values.
Separate three metrics:
- CPA per generated order = acquisition spend ÷ generated orders.
- Acquisition cost per completed sale = acquisition spend ÷ delivered and paid orders.
- Customer acquisition cost (CAC) = total acquisition costs ÷ new customers acquired.
CAC includes expenses attributable to acquiring customers, such as advertising, commissions, tools, and personnel. It does not necessarily equal acquisition cost per order: one customer may purchase multiple times.
If you buy traffic directly, record that spending. If you pay affiliate commissions, record the corresponding payouts. Avoid counting the same expense twice.
2. Calculate the Impact of Uncompleted Orders
Consider this hypothetical cash-on-delivery campaign:
Metric | Result |
Acquisition spend | USD 10,000 |
Generated orders | 1,000 |
Delivered and paid orders | 700 |
CPA per generated order | USD 10 |
Acquisition cost per completed sale | USD 14.29 |
The acquisition cost per completed sale is approximately 43% higher than the initial CPA.
You can estimate it using this formula:
Acquisition cost per completed sale = CPA per generated order ÷ delivery-and-payment completion rate.
In this example:
USD 10 ÷ 0.70 = USD 14.29.
Calculate the completion rate using the same group of orders associated with the acquisition spend. Comparing this week’s advertising expenses with deliveries from earlier campaigns can produce misleading conclusions.
3. Establish How Much You Can Afford to Pay
First, calculate the contribution available before acquisition costs:
Pre-acquisition contribution per completed sale = net revenue per completed sale − variable costs per completed sale.
Net revenue should exclude discounts, refunds, and taxes collected on behalf of authorities. Variable costs should include merchandise, transportation, applicable import costs, fulfillment, delivery, payment collection, and losses associated with unsuccessful orders.
Allocate costs from orders that generated no revenue across completed sales from the same group.
Consider this illustrative example:
- Net revenue per completed sale: USD 50.
- Variable costs, excluding acquisition: USD 30.
- Pre-acquisition contribution: USD 20.
If you want to retain USD 5 per sale to cover fixed expenses and contribute to profit:
Maximum acquisition cost per completed sale = USD 20 − USD 5 = USD 15.
With a 70% delivery-and-payment completion rate:
Maximum CPA per generated order = USD 15 × 0.70 = USD 10.50.
That is your limit under these assumptions. Recalculate it whenever prices, costs, or completion rates change.
4. Optimize Sales Quality Alongside Traffic Costs
A channel generating cheaper orders can ultimately cost more:
Campaign | CPA per order | Delivery and payment completion | Acquisition cost per completed sale |
A | USD 8 | 50% | USD 16 |
B | USD 10 | 80% | USD 12.50 |
Evaluate each source by country, product, and affiliate. Identify where cancellations, incorrect customer details, or delivery refusals occur. Adjust advertisements and forms to clearly communicate the product, price, payment terms, and delivery conditions.
Logistics also affects initial conversion. According to DHL’s ecommerce report, 67% of surveyed shoppers had abandoned a cart because of the delivery offering.
5. Connect Acquisition, Operations, and Payment Collection
For businesses operating in Mexico, Colombia, and Peru, Kiki LATAM’s services include warehousing, fulfillment, last-mile delivery, and cash on delivery. These services address operational processes and expenses that determine how much revenue remains after each sale.
Kiki LATAM also provides address verification, shipment tracking, API integration, and delivery rescheduling tools, alongside contact center support for delivery issues.
Measure their contribution through concrete outcomes: completed orders, operating costs, and collected payments. Connecting campaign data with order outcomes helps identify which acquisition sources produce valuable sales.
6. Scale After Validating Your Margins
Review sufficiently mature order groups weekly, accounting for returns and adjustments. Increase budgets gradually and verify that the acquisition cost of additional sales remains within your limit.
Monitor when cash becomes available, too. A profitable campaign may still require funding inventory, advertising, and operations before collected payments reach your account.
Do not justify initial losses with repeat purchases you have not demonstrated. Use observed results and recalculate your limits whenever operational conditions change.
To assess your costs, delivery model, and growth opportunities in Mexico, Colombia, or Peru, speak with a Kiki LATAM expert and request a free consultation.
