I've ebayed quite a few of mine, but they can be a real PITA to pack. A few years ago I built a 1/24 helicopter but had to list it on ebay for collection only, as helis have a lot of sticky-out bits. It actually sold about 6 times, to people who didn't understand that they'd have to collect it, so it's still here. I might give it to a charity shop or just bin it.
Pete
Pete