OverHalfSale offers this Steve Madden Women's Crew Socks 3-Pack in four styles for $6.99. Coupon code "OHS-28" cuts it to $4.99. With free shipping, that's the lowest total price we could find by $5, outside of the close price below.

Amazon has a similar set in Teal Dots for $5.57 with free shipping for Prime members.