Check out eBay. There's a guy on there who's selling NOS Dura-Ace 7403 wheelsets (8/9 compatible) with Mavic Cii rims for $299 with free shipping. Last time I checked he still had a couple left. Hard to beat that deal.

I picked up a set to replace the tubular DA wheelset on the '86 Paramount that I just bought (it's already an 8 speed and set at 130). Cost was about the same to buy a set of good clincher rims and spokes and have the LBS swap out the hubs and true the wheels, but now I have these lovely tubulars to sell and defray part of the cost of the new clinchers.