The changes to eBay's fee structure which we first reported on back in July takes place today. As of now, the same final value fees apply whether you're selling an item via auction or at a fixed price.
Our original analysis explains how the trade-off works: you can now list items without paying anything up front, but you'll ultimately end up giving eBay more money most of the time. That said, alternatives for selling off unwanted stuff which aren't already associated with eBay aren't exactly thick on the ground: the obvious ones are Trading Post, Quicksales and Dinkos. Any other suggestions?