Today only, Macy's discounts a selection of boys' and girls' winter coats to $21.99 as part of its Cold Weather Flash Sale. Apply coupon code "FLASH" to cut that to $15.39. (Eligible items are marked.) Opt for in-store pickup where available to avoid the $9.95 shipping fee, or spend $99 or more to bag free shipping. A couple of best bets, with prices after coupon: