The LUK stage II (ProGold) is $795ish for the complete kit wich includes flywheel, clutch disc, pressure plate, new throwout bearingis etc etc... it's made by LUK (the oem supplier) so it comes w/ everything a factory replacement would. It's a good idea to replace your slave cylinder while you're in there and get a remote bleeder line (I did).
When doing a clutch on a C5 make sure you have then new assembly match balanced to the old some mn6 cars receive a final balance and if their off they add smal weights to the flywheel and harmonic balancer. If you install a zero'd clutch/pp and your car is one of them, it can be off. Also, the mfg's are supposed to send out these new clutch kits allready zero balanced, but in talking to all of the big name tuners they ALWAYS re-balance the clutch assy and verify it. Lastly, if you go w/ the LUK make sure the pressure plate self-adjuster is properly adjusted for max clamp load. Mine isn't and the clutch slips. I have to pull my headers to pull the clutch inspection cover, to make this adjustment and it's been very annoying b/c I can't drag my car at all right now. I just haven't had the time to do all the work.
Cya,
B