I think that Bikes Direct has the best deals going on just about every type of bike, for every level of rider. There are a few complaints about the quality of the bottom brackets, the wheels, etc., but these are things that need to be replaced on every entry-level bike, after time.

Seriously though, just do a search, and see how many threads there are about this topic. In fact, there's a length "Mercier Kilo TT Pictures" thread which discusses the merit of this bikedirect.com bike (if that's the one you're considering).