Ending today, GearXS offers the Steve Madden Fleece Lined Knee High Socks 2-Pack in Grey, Black, or Chocolate for $9.99. Coupon code "GXS-6" cuts it to $3.99. With free shipping, that's a buck under last month's mention and the lowest total price we've seen. (It's a current low by $4.) They're available in one size fits all.
Note: This 2-pack comes with one pair in your choice of color and one pair in black.