X-treme Geek via Amazon offers Amazon Prime members the Fred Bone Chillers Ice Cube Tray
with free shipping
. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping adds $5.58.) That's the lowest total price we could find by $7.
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. (Note that currently there's a waitlist for Amazon Mom.)