Below we've listed a selection of SanDisk Extreme HD Video Class 10 UHS-I Secure Digital High-Capacity Cards, with prices starting at $19.95. With free shipping, that puts each at the lowest total price we could find by at least $2. The SDHC cards:

• SanDisk 16GB Class 10 UHS-I SDHC (pictured) for $19.95 at Adorama or B&H
• SanDisk 32GB Class 10 UHS-I SDHC for $32.29 at DZ-Tech via eBay
• SanDisk 64GB Class 10 UHS-I SDHC for $63.95 at Adorama or B&H (3C_Expert via Rakuten Shopping charges a cent less)