Amazon has Samsung 64GB 100MB/s (U3) MicroSDXC EVO Select Memory Card for $17.99 with free shipping on orders over $25 or for prime member. You can save $5.00 when you at checkout.
- Up to 100MB/s & 60MB/s read & write speeds respectively; Class 10 UHS 3
- High-performance for 4K UHD video recording, high resolution pictures, mobile gaming and music, for use in Smartphones, Drones, Android Tablets, Tablet PCs, Action Cameras, DSLRs and more
- 10-year limited warranty. Compatible with a wide range of devices for both SD and micro SD
- Interface UHS-I, compatible to HS interface, UHS-I, compatible to HS interfaceGb/s, Write Speed Up to 20MB/s