From Amazon France: Add one to the cart by clicking "Ajouter au Panier" on the right. Start the checkout with any US-based Amazon.com account The price changes to EUR 34.16 Choose "Fast" delivery. Add EUR 7-9 for shipping Final price is about $52 USD after conversion and shipping (about EUR 43). Delivery will take about 2 weeks.
This normally sells for over $100.
According to the product description on Amazon.Fr, this copy is "region-free" (words translated from "Toutes les r gions"). A region-free copy will play on any Blu-Ray player in the world, whereas many other discs purchased overseas will not play in the US.
You can change the audio track to English, if another language is selected when you first play the discs. According to the description, English (DTS surroundsound) audio is available on these discs, so you don't have to worry about learning French to watch this copy.
This pack gives you the first 6 seasons on Blu-Ray discs. Game of Thrones aired Season 7 this last summer, which is not included in this package. A package with Season 7 costs over $130.
As an alternative, you could get a 1 month free trial to HBO Now, then pay $15/mo thereafter. HBO Now plays Game of Thrones on most tablets and streaming media devices (Chromecast, Roku, Amazon Fire Stick, Apple TV, Xbox One, etc).