Amazon offers its Prime Members a selection of Reebok NFL Adjustable Caps starting at $4.50 with free shipping as listed below. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.58.) Each is the lowest total price we could find by at least $6. They feature an embroidered front logo and adjustable hook and loop closure. The deals:

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.