[haus]

You can search for recently completed auction listings on Ebay using their advanced search function to find pretty much an exact answer to your question. My gut feeling would be for an almost NIB phone with no physical wear to be in the range of $300. Bartalane got a good deal. As a seller you want the largest buyer/bidder pool available, so Ebay would beat Craigslist IMHO (again, if you're selling). Make sure the auction doesn't end at 3am or anything, so you get lots of snipers at the end. Not all snipers use software. 8pm is a good time - kids are asleep, dinner is over, and the family is doing "other things" so the techie can steal away to the den for some Ebay goodness.