quohog the great
Ultra Pro deck boxes you can pick up just about anywhere in different sizes. My local game shop has them, but I've seen them at Target, Walmart and Toys'r'us as well. If you go to Target or somewhere, look for the Pokemon area and you'll find them.
The only cheap boxes i've seen from ultra pro have been the semiridged over boxes with a flap that locks over the top. unless i'm missing something from them