Most ebay dealers are good. The only problem I see with buying at a distance like this is the difficulty of having to send things back when they are not right. Having said that, I've had a few bikes from ebay and they were always fine. You kind of expect minor niggles with bikes - things like gear adjustment and brakes. I've never had a problem I couldn't fix easily enough. I've bought about six bikes off ebay in the last three years. - Make that seven, actually.