What is this feature and how does it work?

If you're not satisfied, we're not satisfied ???? .

That's why you have the chance to review and approve a seller's delivery before your money changes hands.

You'll get your money back:

instantly if you cancel within 20 minutes of placing the order
instantly if the seller misses the deadline and you choose to cancel the order
instantly if the buyer and seller mutually agree to cancel the order
within several hours if the order is completed poorly or incomplete.