Today only, Amazon offers its Prime members the Transcend JetFlash 32GB USB 2.0 Flash Drive in Black, model no. TS32GJF500, for $19.99 with free shipping. (Non-members can bag free shipping on orders over $25; otherwise, shipping adds $8.07.) That's $0.62/GB and the lowest total price we could find by $9. It features a retractable USB connector.

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.