The "local" distributor will only sell to "official" businesses here, so I had a business get me some from them. Bit of a hassle, though. Sparkle Auto used to sell them, but I think there was a change in AutoMagic's selling rules, so they've dropped the line. I don't know if there are any places that you can buy "bulk" amounts online. You can buy 16 oz. "trial sizes" of some stuff from the AutoMagic site, though.
Overall, from what stuff I've used, I don't mind the products. The biggest problem I have with them is the durability. They don't seem to last long here. But as to the polishes etc. I've had good experiences with them.