I wrote to Tamiya USA today and asked why these products are not available in the USA. They told me it had to do with the way they are labeled and not passing the labeling standard for what was in the product.
I've seen these products on Youtube and they really make a difference on car models in particular and also on clear parts in general. You can get these from the far east on Ebay. Have any of you bought from the Hong Kong hobby shops on Ebay?
I am going to be building the Tamiya LaFerrari, which could really benefit from polishing compounds and wax. I know I can try good old No.7 white polishing compound and also carnuba car wax but I hate to chance it at that stage of a complicated build with anything not made for a model.
Maybe I should risk the Hong Kong Hobby shops. I did once in purchasing my Tamiya Lotus 49 which was over $100 bucks. That worked out fine.