Kingston SD10G2/16GB Ultimate X 16GB Class 10 SDHC Memory Card for $18.98. Shipping is free on orders over $25. If needed, use this Filler Tool to qualify for free shipping. Here is a screenshot for your reference. Alternatively, it is available at Best Buy for $18.98 with in-store pickup. It features 15MB/s write Speed and 20MB/s read speed and a write-protection switch.