Many years ago I did what I called a 'redneck roaster' from a george foreman grill, one of the bigger chicken roasting grills they have, a gallon clean paint can (clean as in new, not cleaned out from product, you can get at any hardware store) and some aluminum screen.
I forget what the forum was called where I posted the details at but i I remember it was right around 100 bucks, and yes it did work well, I even used it for roasting my cocoa beans too.
Aaron