Adorama offers the Patriot 16GB LX Pro Series UHS-I Class 10 microSDHC Flash Card 3-Pack, model no. PSF16GMCSHC10BK, for $21.97 with free shipping. That's $7.32 per card and the lowest total price we could find for this quantity by $2. Each card features read speeds up to 40MB/s, write speeds up to 20MB/s, and a write protection switch.