Adorama offers the SanDisk 64GB Ultra UHS-I Class 10 microSDXC Memory Card with Adapter, model no. SDSDQUA-064G-A11, for $37.95 $38.95 with free shipping. That's $0.61/GB, $1 under our mention from three weeks ago (which also required in-store pickup), and the best price we've seen. (It's also a current price low by $1.) It's UHS-I enabled and comes with a full-size SD card adapter. Deal ends November 24.

Update: This deal ended but is back on. Also, Amazon is within a few cents of this price if Adorama's deal expires again.

Update 2: the 32GB version, model no. SDSDQUI-032G-A11, hit $17.95 with free shipping at Adorama. It's the lowest total price we could find by $11. Of note, it's temporarily out of stock, but it can be ordered at this price for delivery when available.