adidas via eBay offers its adidas Men's Speed Shorts in Scarlet, Onix, White, or Navy for $12 plus $5 for shipping. That's the lowest price we could find by $3, although we saw another color for $4 less three weeks ago. They're available in select sizes from S to XXL.
Shively Sporting Goods via eBay offers the adidas Men's Aero Knit Climacool Shorts in Onix/Dark Grey Heather or Power Red/Dark Grey Heather for $14.95 with free shipping. That's tied with last week's mention and the lowest price we could find by $16. They're available in select sizes from S to XXL.