Thumb Score: +17 Under Armour has Under Armour Unisex 6-Pack Quarter Socks UA Performance Tech on sale for $17.97 – $9.89 when you apply promo codes EXTRA50 and EXTRA10 in cart = $8.08. Shipping is free on $50+ orders. 3 Colors available: Black / Steel ($8.08) White / Steel ($8.53) Black / White / Steel…