So for those still confused... basically this "guarantee card" is a Walmart gift card. And you go online and register it for the item before midnight. If you don't have it registered before that, it is just a plain old Walmart gift card for the exact amount you spent purchasing the "item." I have to say, whatever Walmart executive came up with this idea is a pretty good/sneaky businessman. Because let's say you get the card, but don't get it registered in time... instead of refunding you in cash or credit card (whatever you paid with, as they NORMALLY would do if you return something within the appropriate time-frame) you get your full amount of money back, but only in the form of a Walmart gift card. Basically the "guarantee card" only guarantees that Walmart will be getting your dough haha. So if you are on a strict budget, and had a back-up plan to go somewhere else in the morning to find a similar deal if you couldn't snag Walmart's, you're screwed. Because the money you had pulled for that item is now locked into Walmart only. Gosh I'm still in awe over the fact that stores seem to get sneakier and more profit-driven each year. That's business though! So in all, I suppose this set up will probably get a few more people the item, but Walmart's the one making out on this deal, because they know the server will be overloaded at that time. So if you shop at Walmart a lot, and have enough money to cover the purchase at another store in case you can't get it registered on time, I say go for it!