Thank you ljsense. Tire clearance - I don't like the lack of it, but open to accepting it if other aspects work. I will check out the Sheldon Brown study.
What I am most fascinated with though is that some people can say "it looks like it has ..." (7800 Dura Ace shifters). This is what I cannot see at this point, due to lack of experience. Will report back later in the week, if I manage to see this bike.
As for the variation in pricing opinions (from $200 to $600, to be conservative), I don't mind it at all. It is understandable, being a function of one's experience (and saturation with) bikes, as well as purchasing power.