Not exactly, the biggest annoyance with eBay (in my experience) is dealing with shipping, disputes and returns. If I could recover even 50% of the value of unused items without dealing with the ridiculousness of p2p transactions (flakes, tire-kickers, scammers) I'd do it in a heartbeat.

People regularly give businesses >50% cut to get cash immediately and this isn't even counting resellers who low ball people who don't know what they have.