BuyDig offers the Samsung 32GB Class 6 microSDHC Secure Digital High-Capacity Card, model no. MB-MSBGB/AM, for $22. Add it to your cart and it drops to $20. With free shipping, that's $0.63/GB, tied with our mention from a week ago, and the lowest total price we could find by $5. It features transfer speeds of up to 24MB/s.