PUMA offers its PUMA Men's Bamboo Liner Socks 3-Pack in White for $3.99. Plus, coupon code "PRIVATESHIP" bags free shipping. That's a buck under our June mention, $1.33 per pair, a savings of $15, and the lowest price we could find. They're available in size 10-13, which fits men's shoes sizes from 8 to 12.5. Deal ends October 18.