GearXS via eBay offers the Refael Collection Men's, Women's, or Kid's Merino Wool Blend Thermal Socks 2-Pack for $6.75 with free shipping. That's $3 under the lowest total price we could find for the same quantity of comparable socks elsewhere, although we saw them for a buck less a month ago. They ship in random colors and are available in men's size 10-13, women's size 9-11, and kids' size 6-8.