Amazon offers its Prime members the SanDisk 32GB Ultra UHS-I Class 10 SDHC Secure Digital High-Capacity Card, model no. SDSDU-032G-A11, for $20.99 with free shipping. (Non-members can spend $25 or more to receive free shipping; otherwise it adds $8.02.) That's $0.66/GB and the lowest total price we could find by $4, although we saw it for a buck less last week. Sales tax is added where applicable. It features a maximum read speed of 30MB/s.