I've purchased two mountain bikes and a Burley road frame. All experiences were good. Make sure you check (read!) all of their feedback. I also don't do any business at all with someone who sells something that isn't nicely displayed. It shows they care, but if it's in the garage with junk all around it, they don't. I've even seen pics where they don't even bother to take it from behind stuff. Lots of pics and ask them at least one question and see how they respond. I also don't deal with anyone who appears to be even the least obnoxious in their descriptions. You know, the ones who threaten about non paying bidders and such. There is probably a reason they have problems. I've been buying and selling on ebay for 10 years and the only bad buying/selling experience was on TE! I paid, she didn't send and disappeared.

Also, pay with a credit card. That way you have options if things don't go well. I always use a credit card for big ticket items. Don't think that paypal will help, they won't (my TE purchase), but you can always dispute through your credit card.

And, uh, yeah Emily, which bike are you selling?