AOV in ecommerce: the number that pays for your advertising

3 days ago
3 min read

Introduction

Average order value — AOV — is total revenue divided by number of orders, and in an online shop it is the number that decides whether everything else works. It sets what you can afford to pay for a visitor, whether free delivery is sustainable, and how much margin survives a return.

Most shops are more sensitive to AOV than to conversion rate, and considerably more sensitive to it than to traffic. A shop turning 2% of 10,000 visits at £40 makes the same revenue as one turning 2% of 5,000 visits at £80, and the second one spent half as much getting there.

It is also the easier number to move. Conversion rate improvements are hard-won and small; AOV responds to changes you can make in an afternoon.

1. AOV in ecommerce is revenue divided by orders, not by customers

The definition that matters.

Per order, not per customer and not per session. Mixing those up produces a number that cannot be compared to anything, including your own previous figures.

2. Calculate it after discounts and before delivery

The convention to fix.

Gross AOV flatters you; net of discounts is the number that pays your bills. Decide which you use, write it down, and never change it silently. Whatever you pick, hold it for at least a year.

3. Look at the distribution, not just the mean

The first real insight.

A shop with a £45 average may have two clusters at £20 and £90 and almost nothing between. The mean describes neither. Sort your orders by value and look at the shape before changing anything.

4. Free delivery thresholds are the strongest single lever

The obvious move, done properly.

Set the threshold above your current AOV, not at it — somewhere between the mean and the upper quartile. Below the average it costs you margin on orders that would have happened anyway.

5. Bundles beat upsells online

The mechanism that suits the medium.

Nobody is standing there to suggest an addition, so the suggestion has to be built into the page. A bundle priced below the sum of its parts does the job without a conversation.

6. Put the related item where the decision happens

The placement question.

On the product page and in the basket, not on a page the buyer has already left. Recommendations after the fact are a different tactic with a much lower rate.

7. Watch AOV and conversion rate together

The trade-off to monitor.

Raising a minimum order or pushing a bundle can lift AOV while quietly reducing the number of orders. Revenue per visit is the figure that catches this. Track it alongside both.

8. Segment AOV by traffic source

The diagnostic use.

Paid, organic, email and social frequently produce very different order values, and a channel that looks expensive on cost per order can be the best one on margin. This is the most useful cut of the number.

9. Recalculate seasonally

The maintenance.

Gift periods, sales and clearance all distort it, and comparing a December AOV to a February one tells you nothing. Compare like periods year on year. Keep the monthly series.

Be careful about raising AOV by pushing quantity on things people do not want. Returns rise, margin falls, and the reported AOV improves while the business gets worse — which is why returns-adjusted AOV is worth calculating at least once.

Conclusion

Divide revenue by orders, decide once whether that is before or after discounts, and hold the definition.

Look at the distribution rather than the mean, set any free-delivery threshold above your current average rather than at it, build bundles into the product and basket pages where the decision happens, watch conversion rate alongside AOV so you notice the trade-off, cut the number by traffic source because channels differ more than people expect, and compare seasons year on year rather than month to month.