I just bought a pretty sweet cage from Petco today, because it was on clearance. I didn't really like any of their rat cages, and I was really just in there to get some bedding, but it was originally $70 and I got it for like $10. So anyways, it's really nice and big, the bar spacing is perfect for my rattie mom and the babies, and it has a nice, deep plastic base. Only problem is that I need to get some platforms that i can clip onto a wire cage somehow so I can make different levels in the cage. Does anyone know any good places for them...?