Amazon offers its Amazon Prime members the Patriot 8GB Signature microSDHC Class 10 Secure Digital High-Capacity Memory Card, model no. PSF8GMCSDHC10, for $9.99 with free shipping ($1.25/GB). (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping adds $8.12.) That's the lowest total price we could find by a buck, although we did see it for $2 less in December (since expired).

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.