After a little bit of looking it's price is 75$. You can buy a good calculus book for a lot less at most used book stores , or even a new book for about half of that.
The $75 is for the entire package - book, solutions manual, tests etc. Any textbook package from any publisher that includes a solutions manual is easily $75 or better.
www.1roadtozion.com is a home run business run by an acquaintence of mine. Very wonderful family. It's $57 at her site.
:)
That price includes the answer key and solutions manual, which you will absolutely need. I think it's a good price, especially since it will never be outdated.
You can get brand new and much cheaper at http://www.rocksolidinc.com.
You can get much cheaper used too. We got the entire Saxon HS calculus package for about $35 used.