I purchased this card to be used in my drone while I'm shooting 4K video. 4K video requires much faster data transmission to the SD card, so it is imperative to get a card that is fast enough for your 4K equipment. The original price on this 128 GB SD card was $300, but they matched the price of B&H Photo, and sold it to me for $67. I saved over $200 because of Best Buy's price matching policy. They are incredibly helpful and will price match anything on B&H photo's website.