Babylegs has a two day sale running with 50% off all styles of Babylegs. Most styles of the leg warmers are $12 and they have really cute ones for fall available already- so your price will be $6 a pair after promo code.
They carry tights and socks as well.
Your shipping is free on a $30 order or it is $3.95.
Just head over to Babylegs and use coupon code: HALFOFF at checkout. This expires 8/23!