FreshPair offers the Le Mystere Women's Perfect Pair Hipster in three colors for $14. Add three pairs to your cart to drop the price to $36. With free shipping, that's $12 per pair and the lowest total price we could find for this quantity by $6. They're available in sizes S to XL, although not in all size/color combinations.
From shoes to cookware, if you're willing to pay a little more for these awesome products, you may never have to shop for another again.