I've been looking all over, normal places like Amazon and such don't have decent kaolin clay for use. (Based on reviews) and I have no pottery stores near me. Anyone have any advice?

I've just bought eight 12kg bags of clay from an online UK site. The shipping fees are expensive of course as it's heavy stuff, but the great thing about pottery clay is that once you've got it, you can store it and use it again and again. So in my mind it works out cheaper in the long run compared to food mess that can only be used once. Hope that helps. It's gorgeous stuff!