Until December 18 at 1:59 am ET (or 100% claimed), Amazon offers its Prime members the ExOfficio Men's Give-N-Go Boxer Briefs
in five colors (Black pictured) for $12.99
with free shipping
. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping adds $5.58.) That's $3 under our October mention the lowest total price we've seen. (It's a current price low by $6.) They're available in sizes S to XXL, although not in all size/color combinations.