4 Best Sierra Coupons, Promo Codes + 60% Off - May 2022 ... The free Honey extension will try all 4 available Sierra coupons and apply the best money-saving deal to your cart. Manage Cookies. ... In Sparks, Nevada, nestled at the base of the grand Sierra Nevada mountain range, Sierra Trading Post was founded in 1986. From its humble beginnings as a catalog retailer, Sierra Trading Post was eventually ...