Seven Slings has coupon code. You have to pay for shipping but still cheap.

Seven Slings is giving away free $39 baby carriers (while supplies last).
Use promo code “Free”!
https://www.sevenslings.com/cart

I found the coupon will give $40 off from your purchase.
This promo code can also be applied towards one of their Gift Sets which include the exact same sling as well as matching leg warmers & a matching acryllic cuff bracelet? This promo code brings the price on any Gift Set regularly priced at $72.00 to only $5!