Amazon offers its Prime members the Sony 16GB SDHC Class 10 UHS-1 Secure Digital High-Capacity Card, model no. SF16UY/TQMN, for $11.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping adds $8.02;we list a better deal for non-Prime members below.) That's $0.99/GB, although we saw it for $2 less last month. (For further comparison, it's the lowest total price we could find by a buck, as listed below.)

Not an Amazon prime member? MacMall has it for $8.99 plus $4 for shipping.