yo man, hahah i totally missed this thread.
i only got a Wide angle conversion lens and it was a cheap piece of crap at 60 bux. some of the higher quality ones like the olympus tcon17(for telephoto) can go up to 100+++ so it really depends on the brand and the quality.
have a look at www.clubsnap.org there are alot of pple selling conversion lens there. as to which would fit on ur cam, dun worree there are tonnes of pple there using ur cam that u can post questions too and they will reply.