Thor: 3-Movie Collection (Region Free Blu-ray) $22.55 Shipped @ Amazon UK

*Region Free* Price Search: eBay , Amazon
Use a credit card that doesn’t charge a foreign transaction fee. Pay in USD instead of GBP. Your total ends up being $21.68 shipped.
Link
Includes:

• Thor (Blu-ray)
• The Dark World (Blu-ray)
• Ragnarok (Blu-ray)