I walk away without a word, if I feel something is too high. A lot of times things are cheaper than anywhere else. You have to catch the right seller. Lets say, a guy who is into cruisers or BMX, who has a small stash of mountain or road parts. Or I look for the guy who has a A LOT of older stuff they just want to get rid of. People who have things priced too high, and are firm, I usually don't waste a lot of time on. Most of the time I have found the prices are much like the prices on the C&V classifieds, only a level or so lower. I got a rear 8 speed XT derailleur at the last swap, for $5. Nearly perfect condition. Those are the kinds of deals I go for, hehe. If you roll into a swap with $20 stems and $40 derailleurs, you're not going to sell much. I've sold complete bikes before, but people will always try to talk you WAY down on those, even if they're nicely priced. I go for the components mostly.,,,,BD
This isn't the exact derailleur, but very close. Mine is a tiny bit cleaner, and no scars.
http://www.ttsattler.com/m/ebay/shim...1208-14702.jpg