Amazon offers its Prime members the Fruit of the Loom Men's Basic Briefs 7-Pack in White for $9 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $5.48.) That's $1.29 per pair and the lowest total price we could find by $4, although we saw them for a buck less last month. They're available in sizes S to 3XL.