Swap lets you trade an item for another item instead of selling it for cash. You can offer a swap in two ways: as a dedicated swap auction type, or by flipping on the "Accept swaps" toggle on any of your regular sell or auction listings. An item can be up for sale, up for auction, and open to swaps all at once — you stay in control of which offer you take.
Swaps are available in ordinary listings and inside live auction rooms. Whichever way you trade, the same protections below apply.