If there was a problem with the cv joint on a 98 Chevy Cavalier what type of noise would it make and what would it cost to repair or replace it?

In my experience, the noise would be a rapid high pitched clunk when turning the wheel in either direction. It would depend on if it was the outer or inner joint, most likely you will expect to pay over $100 at a decent mechanic. The cv joint itself is probably around $25-$30.