Ditto! You can go to HomeDepot or Lowes. Get the coated melamine sheets. Ask them to cut it for you as well. You can make a 5 tub rack for really cheap. Here's a link to give you an idea. The biggest expense is the t-stat and heat tape.
http://www.youtube.com/watch?v=jEyNBUUf-SA
You can look through here as well:
http://ball-pythons.net/forums/forum...y-and-Supplies
Good luck!