Amazon offers its Prime members the Die Hard Collection on Blu-ray Disc
with free shipping
. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $2.98.) That's the lowest total price we could find by $19, although we saw it with pickup for $2 less in November. It includes Die Hard, Die Hard 2: Die Harder, Die Hard with a Vengeance, and Live Free or Die Hard.
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.