BuyDig offers the SanDisk Ultra 64GB Class 10 Secure Digital High-Capacity SDXC Card, model no. SDSDU-064G-A11, for $43.95 with free shipping ($0.69/GB). That’s $2 under our mention from five days ago and the lowest total price we’ve seen for a 64GB Class 10 SDHC card. (It’s a current price low by $11.) It features read speeds up to 30MB/sec.