As one of its daily deals, Amazon offers Prime members the Lexar 633x 64GB High-Performance microSDXC Flash Memory Card, model no. LSDMI64GBB1NL633R, for $19.99 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $8.) That's $5 under our January mention and the lowest total price we could find by $7. It features transfer speeds of up to 95MB/s and comes with a USB 3.0 memory card reader.

It's also available in 128GB for $42.99 with free shipping. That's another price low, this time by $15. Both deals end today.