Amazon offers its Prime members the BIC Grip Stick Roller Ball Pen 12-Pack
, model no. GRE11-BE, for $6.29
with free shipping
. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.58.) That's 52 cents per pen and the lowest total price we could find by $6.
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.