PNY P-SDUX64U360G-GE U3 High Performance 64GB Class 10 MicroSDXC Flash Memory Card for $19.99. Shipping is free on orders over $49. If needed, use this Filler Tool to pad the order for free shipping. Here is a screenshot for reference. This micro SDXC card features up to 60MB/sec data transfer rate. Most places have it for about $29.