REI Garage offers the Fox River Men's Trail Ankle Socks in four colors (Dark Olive pictured) for $7.73. Opt for in-store pickup to dodge the $5.99 shipping charge. That's the lowest price we could find by $8. They're available in sizes M to XL, although not in all size/color combinations.
REI Garage offers its REI Men's Co-op Merino Wool Expedition Socks in Walnut or Navy for $9.73. Opt for in-store pickup to avoid the $5.99 shipping charge. That's $7 off and the best price we could find. It's available in sizes L and XL.