Originally Posted by TimothyH

DA 7710 octalink cranks are <$300 from Japan. DA track BB is $62 but I read that the DA road BB is quieter and lasts longer - that is close to $90. The ring is <$100 depending on size. You could do the whole thing for about $450 + about $25 shipping + custom's fees. US customs charges import fees for anything over $200 so that could be minimized by splitting the order, cranks vs everything else. Only the cranks would be subject to the fees.

njs-export sometimes has used DA-7710 cranks for <$175 but you gotta act fast.

DA 7600 square taper cranks are $225 brand new. Shimano Dura Ace FC-7600 track crank set (NJS) 170mm - $225.00 : Track Supermarket - NJS/Keirin track/fixed gear bikes, frames, and parts from Japan

Then there are these bad boys... Super Sugino 75 S-Cubic Track Cranks BLACK 170mm - $639.00 : Track Supermarket - NJS/Keirin track/fixed gear bikes, frames, and parts from Japan