BuyDig offers the SanDisk 16GB Extreme HD Video Class 10 Secure Digital Card (pictured), model no. SDSDRX3-016G-A21, for $19.99 with free shipping ($1.25/GB). That's $6 under our November mention and the lowest total price we could find by $5. It features 45MB/sec read and write speeds.

BuyDig also offers the SanDisk 32GB Extreme HD Video SDHC Class 10 Secure Digital High-Capacity Card, model no. SDSDRX3-032G-A21, for $39.99 with free shipping ($1.25/GB). That's $4 under our mention from earlier today and the lowest total price we could find by $4. It features 45MB/sec sequential read and write speeds.