Amazon offers Prime members the SanDisk 16GB UHS-I Class 10 SDHC Card, model no. SDSDU-016G-AFFP, for $11.55 with free shipping. (Non-members can spend over $35 for free shipping; otherwise, it adds $8.) That's $6 under our mention from last week of a similar card and it's the lowest total price we could find by $2. It features read speeds of up to 30MB/s.

Update: The price has increased slightly to $11.64.