Display case

Hi all,
Where do you get your display cases from? I am in need of one that will hold a few (3 or so) 1:43 cars. I see prices all over the board, and need just a cheap basic one.

Thanks
Brad

here's one you can make for under $15.
http://www.briansmodelcars.com/tutorials/tutorial/50
there are also other great tutorials there.