Amazon offers Prime members the PNY 32GB Attache III USB 2.0 Flash Drive, model no. P-FD32GATT03-GE, for $12.49 with free shipping ($0.41/GB). (Non-members can spend $35 or more to bag free shipping; otherwise, it adds $8.) Outside of the mention below, that's the lowest total price we could find by $5, although we saw it for about a buck less last week.

A close price: Best Buy via eBay has it for $12.99 with free shipping.