I won't repeat Andy's points as they were my thoughts when I read this as well.

If you want a cheap option go for this:

http://www.bhphotovideo.com/c/produc...dapter_FD.html

On the local craigslist a few weeks back someone was selling one of canon's first DSLR's and the price was under $100 us.
No matter how cheap you pick up a film camera, in the long run it most likely will not be the cheaper option.