the first set ( the ones i had fitted) were bought as needing a clean down, they cost me 99p with £9.99 postage. downloaded the motorbike 'haynes' manual which gave full strip down and rebuild instructions, stripped them down lubed up what needed lubing up, cleaned everything with cleaner and put them back to gether, good as new. the other set i bought as working as they came off a running bike (apparently) but i dont know the condition of them as ive not even really looked at them yet as there for a future project, they were a little mor heavy on the old wallet at cant remembere exactly but about £15-8 with postage.
if your doing the clutch get a goos one, i had a cheap pattern one in lasted about 5k miles. had a brand new luk one in now for about 2.5 years and 15-20k miles and still bang on, i can wheel spin in second from a standing start so no slippage there yet. changing it it easy i can do it in about an hour and a half ish, and that was with changing the flywheel for my custom modified ultra light weight one.
p.s. give me a shout if you want a light flywheel.