High school class rings can run from very, very reasonably priced to quite excessive. What it really comes down to is what you want on your ring and what you want your ring made of.
If you choose to keep your ring very basic with stones that are not real, you can save yourself a bundle and expect to pay between $50 and $70. If you choose to add engravings, a real stone, or even a diamond, your ring could cost you upwards of $500. Your class ring design comes down to personal taste and of course, money!