As one of its daily deals, Woot offers the Hanes Men's Boxer Briefs 12-Pack in ComfortSoft or ComfortFlex for $27.99 plus $5 for shipping. That's the lowest total price we could find for this quanitty by a buck, although we saw them for $2 less last July. They're available in sizes S to XXL, although not in all size/style combinations. Deal ends today.
Note: They ship in assorted colors.