Fry's Electronics offers the PNY Memory Master 16GB Class 10 Secure Digital High-Capacity Card, model no. P-SDHC16G10-EFMM, for $20.99. This $7 mail-in rebate cuts it to $13.99. With $1.99 for shipping, that's $1.00/GB and the lowest total price we could find by $6. (You can also choose free in-store pickup.) Sales tax is added where applicable. It features a 20MB/s maximum data transfer rate. Deal ends October 20.