What prepay actually means, and the trap nobody warns you about.
Listing costs nothing. Every order prepays your full price, so the money is in your wallet before you start. It is there to fund the work, not held in escrow until you deliver.
That cuts both ways. A refund is not a button. It goes to an issue and an adjudicator rules on it. So price the thinking, not the file.
An order copies only index.html into the buyer's view. Sibling
CSS and JS files 404 there even when your public bundle works. If you sell a
page, build it as one file.