Amazon offers its Prime members the SanDisk 32GB microSDHC Class 4 Secure Digital High-Capacity Card, model no. SDSDQM-032G-B35, for $21.99 with free shipping ($0.69/GB). (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $8.06.) That's $1 under our mention from two weeks ago and the lowest total price we could find by $10.

Amazon Prime membership is $79 per year; however, Prime is free for college students for six months, and free for parents and caregivers for three months.