Amazon has the SanDisk 400GB Class 10 UHS-I Micro SD Card (SDSQUAR-400G-GN6MA) for $52 with free shipping. List price: $89. Features up to 400GB to store even more hours of Full HD video7, class 10 for Full HD video recording and playback2, transfer speeds of up to 100MB/s.
Has excellent Amazon Reviews.
Amazon has the PNY 128GB Elite Class 10 UHS-I SD Card (PNY P-SDX128U395-GE) for $21 with free shipping on $25+ or with Prime. List price: $44. Features read speeds of up to 95MB/s, 4K UHD recording capability, compatible with SDHC and SDXC devices.
Has good Amazon Reviews.
Amazon has the SanDisk 256GB Ultra microSDXC UHS-I Memory Card with Adapter (SDSQUAR-256G-GN6MA) for $35 with free shipping. Ideal for Android-based smartphones and tablets. Has excellent Amazon Reviews.
Amazon has the Silicon Power-128GB High Speed MicroSD Card Adapter (SU128GBSTXBU1V21AE) for $13 with free shipping for Prime members or on $25+. Retail price: $40. Has good Amazon Reviews.