Where it gets stuck.
sample product page with 'Sample Fee: $4.99' has the word 'fee' in it. Fee is a tax. Fee is friction. Fee is the thing hotels charge for WiFi. The conversion rate on sample pages with 'fee' language consistently underperforms sample pages that use 'deposit' or 'credited toward your order.'
Why it happens.
Sample programs are usually set up by operations, not by someone thinking about conversion copy. The $4.99 covers shipping — it is operationally a fee. The framing leaks from internal language into product copy without anyone questioning whether the word 'fee' does the same work in the customer's mind that it does in the fulfillment team's spreadsheet.
The size of it.
Changing 'Sample Fee' to 'Sample Deposit — credited toward your order' is a one-field edit in the Shopify product editor. On three separate A/B tests across two clients, this change alone produced 11–17% lift in sample add-to-cart rate. On a brand doing 400 samples a month at a 22% conversion-to-purchase rate, an 11% lift in sample volume compounds into meaningful incremental revenue inside 90 days.
Filed from inside a working engagement. Edited only for client privacy — the numbers and the mechanisms are exact.