Available for pickup only and with stock varying by ZIP code, Sports Authority offers the adidas Men's Sport Performance Boxer Brief 2-Pack in Black/Black for 44 cents. That's $9 below our mention from two weeks ago in another color and the best price we've seen for two pairs of adidas boxer briefs. (It's a current low by $16.) They're available in sizes S to XL.
Of note, it's available in Black/Anthracite for $13.48. In-cart, the price drops to $10.11. With free shipping, that's tied with our mention from two weeks ago and the lowest total price we could find by $7.