I get mine from Handheld Legend. They have all the Gameboy parts you could ever want.

Use a hair dryer and a spudger and a iSesamo to pop that bad boy off. No sense in buying a heat gun for one use.

Thanks Ben. That's a very good point. Just ripping it out will cost you a couple bucks, not to mention your Gameboy will not work until you replace that ribbon cable.

you need the hammer of Thor, my son.