Amazon has the SanDisk 256GB Ultra microSD card on sale for only $29.99, which is its lowest price to date. On a normal day, you'd have to spend $43 to get your hands on this bad boy. While it falls in line with Prime Day, this deal is not a Prime member exclusive, though you will get your item faster with an Amazon Prime membership.
Includes a USB-C 3.2 Gen 2 interface for wide compatibility with USB-C devices like computers and smartphones. Has read/write speeds up to 1050 MB/s and 1000 MB/s thanks to the fast NVMe tech. Also IP55 rated for dust and water resistance.
This is Amazon price matching Best Buy. The 256GB card works with any system that can read it and is officially licensed for the Nintendo Switch and Switch Lite. Has read and write speeds up to 100 MB/s and 90 MB/s. Limited lifetime warranty.
The SSD has powerful NVMe technology with read/write speeds up to 2,000 MB/s. Of course it works with devices not quite capable of that but you won't get speeds as fast either. It comes with a 5-year warranty from SanDisk.
Has a 1TB storage capacity and connects easily via USB-C. Even while on the go, you'll get super fast transfer speeds with read speeds up to 550MB/s. The enclosure itself is rugged and resistant to water, dust, and drops. Works with PC and Mac.