Product Review Campaign Cost Calculator

Understanding the product review campaign cost calculator — concept and principle

A product review campaign sends free products to reviewers, testers or creators so that a new item gets its first honest reviews, photos or videos. This calculator adds up everything the campaign costs, the products themselves, shipping and any agency or platform fee, and divides the total by the number of reviewers, so you can see what one review really costs and compare it with other ways of gaining social proof.

How it is calculated

• Total cost = reviewers × (product cost each + shipping each) + agency or platform fee total.
• Cost per review = total cost ÷ reviewers.

Product cost is your unit cost, not the retail price; shipping is per parcel; the fee is one lump sum for the whole campaign. All amounts are in the same currency; the calculator shows USD by default but works with any currency.

The principle

The campaign has two kinds of cost. Products and shipping are variable: each extra reviewer adds one more unit and one more parcel. The fee is fixed: it is paid once, whatever the number of reviewers. Dividing the total by reviewers gives an average in which the fixed fee is spread thinner as the campaign grows, so cost per review falls towards the variable cost per reviewer (product + shipping) but never below it.

Worked example

1. Inputs: 30 reviewers, product cost $12, shipping $5, fee $600.
2. Variable cost per reviewer: 12 + 5 = $17.
3. Variable cost for all reviewers: 30 × 17 = $510.
4. Total cost: 510 + 600 = $1,110.00.
5. Cost per review: 1,110 ÷ 30 = $37.00. Of this, $17 is product and shipping and $20 is the fee share.

How to read the result

The figure assumes every reviewer actually posts a review. If only 24 of 30 post, the real cost per published review is 1,110 ÷ 24 = $46.25. Compare the result with the extra gross profit you expect each review to bring. In small campaigns the fixed fee dominates, so test a larger batch or a cheaper platform.

Common mistakes

• Using the retail price instead of your unit cost for the product.
• Forgetting return postage, customs duty or packaging for each parcel.
• Dividing by reviewers recruited rather than reviews actually published.

Frequently asked questions

What is a reasonable cost per review?

There is no universal benchmark; it depends mainly on your product cost. A useful check is that cost per review should be well below the extra gross profit you expect each review to generate.

Should I include the value of the product at retail price?

No. For your own budgeting, use what the product costs you. Retail value matters only for tax or disclosure rules where they apply.

How can I lower the cost per review?

Reduce the fixed fee or spread it over more reviewers, ship lighter packaging, and screen reviewers so a higher share actually publish.

Sources: U.S. Federal Trade Commission, Guides Concerning the Use of Endorsements and Testimonials in Advertising (16 CFR Part 255)