SanDisk's 400GB MicroSD card is just $30 on Amazon
SanDisk Ultra 400GB Micro SD Class 10 microSDXC Memory Card - SDSQUA4-400G-GN6MN for sale online | eBay
Amazon.com: SanDisk 400GB Ultra microSDXC UHS-I Memory Card 100MB/s, C10, U1, Full HD Works with Nintendo Switch Neon Video Game Bundle with (1) Everything But Stromboli Memory Card Reader : Electronics
SanDisk 400GB ImageMate microSDXC UHS I Memory Card - Up to 150MB/s - SDSQUA4-400G-Aw6ka - Walmart.com
SanDisk 400GB ImageMate microSDXC UHS I Memory Card - Up to 150MB/s - SDSQUA4-400G-Aw6ka - Walmart.com
Sandisk Micro SDXC 400GB Extreme Pro Memory Card Multicolor| Techinn
SanDisk 400GB Ultra microSDXC UHS-I Memory SD Card 100MB/s C10 U1 A1 Full HD | eBay
Amazon.com: SanDisk 400GB Ultra microSDXC UHS-I Memory Card 100MB/s, C10, U1, Full HD Works with Nintendo Switch Neon Video Game Bundle with (1) Everything But Stromboli Memory Card Reader : Electronics
Amazon.com: MOVE SPEED 400GB Micro SD Card, Up to 170MB/s Micro SD Memory Card, A2 U3 V60, 4K Full HD Video Recording, with Card Reader and Adapter, for Driving Recorder : Electronics
Amazon.com: Made for Amazon SanDisk 400GB microSD Memory Card for Fire Tablets and Fire -TV : Electronics