Amazon has the Samsung 256GB U3 MicroSDXC EVO Select Memory Card with Adapter (MB-ME256GA/AM) for $40 with free shipping. List price: $55. Has excellent Amazon Reviews.
Ends 7/16. Prime members only. Amazon has the SanDisk Extreme 128GB microSDXC UHS-I / U3 A2 Memory Card (SDSQXA1-128G-GN6MA) for $20 with free shipping. List price: $69. It features read speeds up to 160MB/s and write speeds up to 90MB/s.
Has good Amazon Reviews.
Amazon has the Samsung EVO Select 512GB 100MB/s (U3) MicroSD Card with Adapter (MB-ME512GA/AM) for $95 with free shipping. List price: $200. Features waterproof, temperature-proof, shockproof, x-ray proof
10-Year limited warranty. Includes full-size adapter for use in cameras and laptop/Desktop computers.
Has excellent Amazon Reviews.