climbing shoes are generally around $60 -$70 and up.
Try it a few times first - rent them... and see if it's something you will be doing a lot. Also, check the bulletin board at Planet Rock to see if anyone is selling theirs. I had a pair that I paid $150 (Boreal Aces) for but they were totally too small (you should get them snug but these were unbearable) and I ended up biting it bad and sold them for $75, you can often find good deals like that out there. (note: used shoes - OK, used harness, rope, bieners, etc. -bad)
Stand up for what is right, even if you're standing alone. ~ MLK