Amazon offers its Prime members the Hanes Men's Classics Full-Cut Pre-Shrunk Briefs 7-Pack in White or Black/Gray for $9.21 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, it adds $5.48.) That's the lowest total price we could find by $7, although we saw them for $2 less in January. They're available in sizes S to XL.