Microsoft recently announced that for a limited timeXbox One X purchases will be bundled with PlayerUnknown's Battlegrounds, the Battle Royale game that's breaking all sales records on PC and now Xbox One.
That's already an interesting deal, with PUBG officially priced at $29.99. However, GameStop is taking it one step further by adding a coupon worth of $50 in credit upon your purchase; this coupon will be emailed to you via PowerUp Rewards Active Offers by Christmas day, and the $50 credit will be valid from the day after until January 1st, 2018.
You can see this deal as the third featured one on the new Game Days sale page.
Unfortunately, clicking on the deal on GameStop's website doesn't lead anywhere yet, though a functioning link could very well be added tomorrow. Meanwhile, you could try to phone or just walk to your local store. Overall, it's a damn good offer as its total value would be $580 for the same Xbox One X price of $500.