So, I've received a offer on some vintage Dura Ace 7500's on some Mavic open4's, 28 hole. Do you guys think around 200-250 is a fair price for them (including a free check-up/trueing at a LBS)? If not, what is the most you'd pay?

Another question... would they be much better than what I have now, an old Surly hub on the rear and a fading Campy Strada laced to Mavic MA40's? Thanks for all the help!