Amazon offers its Prime members the SanDisk Cruzer CZ36 16GB USB Flash Drive, model no. SDCZ36-016G-AFFP, for $5.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it costs an extra $8.09.) That's the lowest total price we could find by a buck.

Amazon also offers Prime members the SanDisk Cruzer CZ36 32GB USB Flash Drive, model no. SDCZ36-032G-AFFP, for $10.99 with free shipping. (Shipping adds $8.09 for non-members.) That's the lowest total price we could find by $2, although we saw it for $3 less during Black Friday week last year.