Amazon offers its Amazon Prime members this Scotch Magic Tape 3-Pack
for $2 with free shipping
. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.58.) That's $0.67/roll and the lowest total price we could find for this quantity by $7. Each roll of matte tape measures 25 feet and comes with its own tape dispenser.
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.