As one of its daily deals, Amazon offers Prime members the Transcend 64GB High Speed Class 10 UHS-I SDXC Flash Memory Card, model no. TS64GSDU1E, for $15.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it adds $8.02.) That's the lowest total price we could find by $8 and the best price we've seen. Deal ends today.