In order.
  1. Costco
    $14.99 for a two-pack and they last all damn winter.
  2. Nordstrom Rack
    $11.49 for one pair which is pretty dumb but they're really soft and opaque as shit. Pay attention the packaging tho, I accidentally ended up with leggings.
  3. The Sock Monster
    If you're a rich bitch. Those fuckers are like $20 a pair! They also have 100% cashmere tights there.