I have one, I'll have to see if I can get it working. It was really annoying, I tweaked the laser to what looked like a correct value but maybe I was touching it to the wrong points. But it doesn't read burned games now. It still reads real games. If I can get it working, I can probably sell it to you as I have bought just about every GameCube game I'd ever want (36 total).
I'll let you know.