(UK) has Seven Worlds, One Planet
(4K UHD + Region Free Blu-ray) on sale for £19.99 (price drops in cart) + £3.08 shipping = £23.07 or ~$31.01 USD. Thanks persian_mafia
The total price will be lower if you pay with a credit card that doesn't charge a foreign transaction fee. Switch and pay in GBP instead of USD during checkout. Refer to the forum thread for additional details and discussion.