Save an average of $29 with 50 coupon codes & deals for sierratradingpost.com. Founded in 1986, Sierra Trading Post is an online and catalog retailer that sells branded, second hand, overstocked, and closeout clothing, accessories and shoes. By offering over a 1,000 of the world’s best brands for 30% off their original price, Sierra Trading Post has become a go-to shop for discount outdoor gear and more. For extra savings and free shipping offers, use the Sierra Trading Post coupons and key codes below before your next purchase.