---
title: "Max Ad Cost per Order (Break-even CPA) for COD Stores | WeSell"
description: "The formula for the most you can spend on ads per order and still profit, with confirmation rate, returns and shipping, a worked example and a free calculator."
url: https://wesell.world/en/guides/max-cost-per-order/
lang: en
last_updated: 2026-10-26
---

# Maximum Ad Cost per Order: How to Work It Out Before You Lose Money

Your cost per order in Ads Manager looks cheap, and the month still closes at a loss. That's because the figure is calculated over **every order that came in**, while you only earn on **orders that get delivered**. This guide connects the two numbers.

WeSell team · 26 October 2026 · 3 min read

> Work it out on your numbers
>
> Use the free [order profit calculator](https://wesell.world/tools/profit-calculator/) (in Arabic, no sign-up).

## The problem: ads charge you per order, but the money comes from delivery

If 100 orders come in, not all of them will be confirmed, and not every confirmed order will be delivered. And a returned order isn't zero: it's a **loss**, with shipping both ways and sometimes a damaged product. So you need to work out the expected profit from **each single order that comes in**, and that is the most you can spend on ads to bring it in.

## The formula

First, work out your profit on an order that is **delivered** and your loss on an order that is **returned**:

```
profit_delivered = price + shipping_charged − product_cost − shipping_cost − cod_fee − packaging
loss_returned     = shipping_cost × return_share + product_cost × damage_rate + packaging
```

Then weight them by the probabilities:

```
max_cost_per_lead = confirm_rate × ( delivery_rate × profit_delivered − (1 − delivery_rate) × loss_returned )
```

- **confirm_rate**: the share of incoming orders that get confirmed.
- **delivery_rate**: the share of confirmed orders that get delivered.
- **return_share**: the percentage of the shipping price the shipping company charges you on a return.
- **damage_rate**: the share of returned products that can't be sold again.

If you spend less than this figure per order, you're making a profit; if you spend more, you're losing money no matter how many orders you get.

## A worked example

These numbers are **an example for illustration**. Put your own numbers into the [calculator](https://wesell.world/tools/profit-calculator/):

| Item | Value |
| --- | --- |
| Selling price (excluding shipping) | 600 EGP |
| Shipping you charge the customer | 50 EGP |
| Product cost | 220 EGP |
| Shipping cost charged by the shipping company | 65 EGP |
| Collection fee | 1% of the amount collected |
| Packaging and other costs | 10 EGP |
| Confirmation rate | 70% |
| Delivery rate of confirmed orders | 75% |
| Returns are charged at | 100% of the shipping price, with 10% write-offs |

- Profit per delivered order = 600 + 50 − 220 − 65 − 6.5 − 10 = **348.5 EGP**
- Loss per returned order = 65 + 22 + 10 = **97 EGP**
- Maximum cost per order = 0.70 × (0.75 × 348.5 − 0.25 × 97) ≈ **166 EGP**

So if Ads Manager says your cost per order is 120 EGP, you're safe. At 190 EGP, you're losing about 24 EGP on every order that comes in, even if the numbers look good.

## The number with the biggest impact: delivery rate

In the same example, if the delivery rate drops from 75% to 60%, the maximum cost per order falls to about **119 EGP**. In other words, improving confirmation and shipping gives you more room to spend on ads than any improvement to the ads themselves. See [how to reduce returns](https://wesell.world/en/guides/reduce-cod-returns/).

## The break-even delivery rate

Turn the formula around: if your ad cost per order is fixed, what is the lowest delivery rate at which you don't lose money?

```
break_even_delivery = ( cost_per_lead / confirm_rate + loss_returned ) / ( profit_delivered + loss_returned )
```

This is a useful number to watch for every shipping company and every governorate: any area where the delivery rate is below break-even loses you money on every order.

## Work it out on your real numbers

The formula is easy; the hard part is getting the right numbers: your actual confirmation rate, the delivery rate for each shipping company, and the cost of each product. In WeSell these numbers are calculated automatically from your orders, and the built-in profit calculator gives you the maximum cost per order and the break-even point over a period you choose.

## FAQ

### Should I calculate cost per order on incoming orders or confirmed ones?

Both are useful, but don't mix them up. Ads Manager calculates on incoming orders (leads), so compare it with the maximum cost per incoming order. If you want to compare against the cost per confirmed order, divide the maximum cost by the confirmation rate.

### Why do I count write-offs on returns?

Because part of what comes back is opened or damaged and can't be sold at the same price. If you ignore it, your maximum cost will come out higher than it really is and you'll overspend on ads.

## Read next

- [How to Reduce Returns on Cash on Delivery (COD) Orders: A Practical Guide for Stores in Egypt](https://wesell.world/en/guides/reduce-cod-returns/)