Jack The Scrapper Talks about how to quote a bid for industrial machines to buy from industry also shows what you can make off of them if you do it right.
part 1:
http://www.youtube.com/watch?v=jamnddhStsg
part 2:
http://www.youtube.com/watch?v=Gtwkv0_SsAs
let me know what you guys think or if any one else does this.