Muk Luks Women's Nordic Fair Isle Socks 3-Pack $2.07 - $4.45
Muk Luks Women's Microfiber Patterned Knee High Socks (3-Pack) $2.79 - $4.39
Muk Luks Women's Over-The-Knee Nordic-Pattern Microfiber Socks (Pack of 3) $3.89
Muk Luks Women's Over-The-Knee Microfiber Socks 3-Pack $2.95
There are quite a few more.
These are Add-on items, so if you're a Prime member, your order (including the Add-on items) has to total $25 or more of items shipped by Amazon.com in order for you to receive free shipping. For non-Prime members, the minimum for free shipping is $49 (or if the order includes $25 of books).