Apparently there is a special version of this game that is only available to local UK retailers. This quote is from the Nintendo UK website.
https://www.nintendo.co.uk/Games/Nin...s-1234232.html
"While supplies last, fans will also be able to purchase a special edition of Metroid: Samus Returns which includes a physical version of the game, a download code for the original Game Boy game Metroid II: Return of Samus to be redeemed in Nintendo eShop, a SteelBook®, a sound-selection CD featuring 25 tracks from across the Metroid franchise, a gold “S” pin badge, a Morph Ball 3D keyring and a 40-page artbook.*"
(U.S. edition)
This is the first special edition game I've been interested this year but in the U.S. I believe we only get a reversible slip cover and the soundtrack with our special edition.
If there is any kind fellow willing enough to purchase one and ship it to me I would not mind paying accordingly at a profit to the seller of course.