<p>My son used a calc book that was published in the early 70s! (we werent being cheap - it is the book that Caltech still uses). I did get him a prep book to work thru because some of the methods/terminolgy might be a bit different.</p>
<p>I think you can usually get cheap textbooks that are a lot newer. Once a new version comes out, the older ones can be found for under $30, and sometimes a lot less. I bet you could find cheap texts from the early 2000.</p>