Newegg the Silicon Power 64GB UHS-I Class 10 microSDXC Memory Card with Adapter, model no. SP064GBSTXBU1V20SP, $17.99. Coupon code "EMCEFEL27" drops it to $15.29. (Amazon charges the same with free shipping for Prime members.) With free shipping, that's $15 off list and tied with last week's mention as the lowest total price we've seen. It features transfer speeds of up to 85MB/s. Deal ends January 13.