The MSRP for Samsung UBD-M8500 is $299, and I've been seeing these priced around $150 lately (without the gift card), so if you shop at Walmart anyway this could be a good deal for you.
No need to buy an Xbox One S just to play 4K Blu-rays if you have a dedicated player like this. : )
I don't know how long this will last since it's hard to tell if it's a hidden Black Friday/Cyber Monday special or just a regular price. Either way have fun.
Unfortunately Walmart associate discount won't work on this bundle because of the gift card... still a decent deal.
Updated to reflect additional $8.32 price decrease.