I got a never-built carbon Aegis Swift (WSD) frame and fork on Ebay a few years ago for $699. At the time, the frame/fork combo was running $2100 new. So I got a real deal, though my frame was older (1999, purchased in 2003) - a leftover from a small California bike shop. If you know the geometry you need, I agree that good deals can be found on eBay, especially if you're patient. Triskeliongirl here on TE got a Terry Isis frame (steel) on eBay for $100 last year and built an amazing bike around it!

Emily