Thanks a ton everyone. The seller measured it for me and said the frame is 21.5 inches, so 54cms. I guess I'll actually find out for reals tomorrow (I'll be bringing my own tape measure).
Thanks for the heads up on the brifters and I'll be sure to check out the frame in regard to the sweat and tri-bars. I'm not sure how hard this bike has been ridden. The original seller said he bought it from his sister who must have used it more than him. As most of you have noted from the picture I don't think he's ridden it much.
Based on fit, and the condition of the bike I'm going to offer around 200$ for it with a 250$ max on the offer. I guess we'll see.
Thanks again!