It's cost around $38 to buy on Amazon UK. When I bought the Harry Potter Bluray collection from Amazon UK it arrived pretty fast to the US (1 week).
That's still cheaper than most animes here in the states. So is it totally confirmed to be region free?
If I wait for the frame fix, they might region lock and it'll never make it to the US. If I buy now, they might still release the fixed version without region locking, and we still might get a US release....tough calls to make