I bought a few of these gift cards based on other's recs on this site, used them to pay off my upcoming
Disneyland package. One thing to note that struck me as really odd - while they list them as unused gift cards - you can go into the history of the gift card to see transactions - every one of my gift cards was purchased that morning from Sam's Club directly and then emailed to me as an attachment. Their chat support is 3rd party serviced overseas - I had to follow up about 5 times after 30 days before I got them all. It's definitely super-shady and had all my senses tingling, they weren't getting 16% off on Sam's online gift cards, so I'll leave it up to you to draw conclusions on why they'd do that. I only bought because I figured I had protection from my CC if everything went wrong.
The 16% wasn't much more than waiting for Sam's to have the CashApp 10% boost and then doing $400 a day between my wife and I. That's definitely what I'll be waiting to use in the future.