Best Buy offers the SanDisk Mobile Ultra 64GB Class 6 Secure Digital Extended-Capacity microSDXC Card, model no. SDSDQY-064G-A11A, for $79.99 with free shipping. That’s $1.25/GB, $20 under our January mention, and the least expensive 64GB microSDXC card we’ve seen. (It’s also the lowest total price we could find for this model by $27.) Sales tax is added where applicable.