I sell stuff on eBay, so first I went there to look for inexpensive bins, but not cheap there, and I noticed someone selling plans on a CD.
So, being the completely cheap (not frugal, I admit - I'm cheap - admitting you have a problem is the first step of that recovery, eh?) person that I am, I googled 'free compost bin plans and came across these two sites:
If you ever played with Lincoln logs, then u can build this compost bin. http://www.youtube.com/watch?v=iMYDuBsROg8
I have been using this one for about a year now and it really works well. Just layer your browns and greens, water well, and u will have 150 degree compost in a couple of days. Hint: leaves and coffee grounds work really well. Also add any food scraps, be sure and bury these down under.