Warehouse Deals via Amazon offers Prime members this Peace Cereal Walnut Spice 11-oz. Box 3-Pack for $6.69 with free shipping. (Non-members can get free shipping with orders of $25 or more; otherwise, shipping adds $6.44.) That's the lowest total shipped price we could find for this quantity by $10.

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.