Amazon, unfortunately, is famous (or infamous?) for listing counterfeit SD cards on it's sites. Probably not the best place to buy.
The topic of "what card to buy" is a complex one, because much depends on what you're shooting - stills vs video, 4K vs 5.4 K and so forth. DJI gives guidance, but unfortunately, it seems like you need an engineering degree to sort out the various speed ratings. At the same time, storage is cheap, especially compared to the cost of our drones, so why cut corners to save a few bucks? Buy a brand name card. For once, it matters...