REI-Outlet offers the Injinji Unisex Performance Series Lightweight No-Show Toe Socks
in seven colors (Heather Gray pictured) for $5.93
. Opt for free ship-to-store pickup
to avoid the $5.99 shipping charge. That's the lowest price we could find by $5, outside of the price below. Sales tax is added where applicable. They're available in sizes S to XL, although not in all size/color combinations.
Don't want to pick them up? Amazon offers them in six colors starting at $6.79 with free shipping via Prime.