Ebay offers adidas men Trefoil Crew Socks 6 Pairs for $9 (reg. $22) after code with free shipping. 

Apply Code: ADIJULY40

Product Description: 
Clean, sporty style for every day. These men's Trefoil crew socks have a durable build with added cushioning and sweat-wicking fabric for comfort. The handy six-pack will see you through the week.