BuyDig offers the SanDisk Ultra 64GB Class 10 Secure Digital High-Capacity SDXC Card, model no. SDSDU-064G-A11, for $45.99 with free shipping ($0.72/GB). That's a buck under our mention from last week and the lowest total price we've seen for a 64GB Class 10 SDHC card. (It's a current price low by $14.) It features read speeds up to 30MB/sec.