Amazon offers its Amazon Prime members the Reebok NFL Men's Sideline Draft Hat
in 13 teams (Tennessee Titans pictured) for $5.90
with free shipping
. (Non-members can spend over $25 for free shipping; otherwise, shipping adds $5.14.) That's the lowest total price we could find for this hat elsewhere by $19. These hats come in sizes S/M to XXL/3XL, but not in all team/size combinations.
Other teams are available starting at $6.18.
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.