Just placed my order on amazon.jp (which I notice never gets linked in these sorts of threads for some reason?). Total for the limited edition blu-ray was $49.29, including shipping. They only offer "Amazon Global Shipping," which doesn't actually give an estimated delivery date, but my orders have always come in within a few days of the release date. Currently the cheapest place you can order this from.
Forgot to mention that my delivery estimate is Saturday, 3/21