The owner of my LHS says he can't get it from his distributer, reason unknown.
He speculates it's an EPA issue but doesn't know for sure. Other posts have said it's unavailable all over the US, haven't seen any comments from the world at large.
Too bad...it's a great product. I'm ordering some Alclad primer and Mr. Surfacer from Sprue Bros. to use until, or in place of Tamiya. Some on this forum like Duplicolor automotive primers, which I'm also going to try.
mike