Try a gift with purchase instead of money off

When to use it

When percentage off is the page's only promotion and repeated discounting is eroding the reference price.

How to run it

Offer a named gift above a threshold ("free travel case on orders over $80") against the discount it replaces. Read margin per order as well as conversion.

Why it works

Raise the perceived value of acting

A gift adds value without lowering the price you can charge next time. You can also name it: "free travel case with your order" is concrete in a way "15% off" is not.

Source: Rao & Chen bonus-pack research; retail promotion practice