have you considered used yet? I found a great scott addict r4 for only $300 on craigslist. Now I'm saving for an apex groupset. I might buy it piece by piece to save money and possibly upgrade certain components. I used to search ebay for a good deal on a nice carbon frame until i stumbled upon my scott.

I'm going to use these guys as a common source to find components for cheap.
http://stores.ebay.com/The-Pros-Closet