Walmart offers the in Solid, Stripe, or for $14.98. Choose in-store pickup to avoid the $5.99 shipping fee. That's $1.50 per pair and ties the best price we could find for just a 7-pack elsewhere, which would be $2.16 per pair. (Some sellers charge around this price for a mere 5- or 6-pack pack.) They're available in sizes S to XL.