Columbia takes up to 60% off a selection of its men's, women's, and kids' apparel and shoes via coupon code "COLBRR60" during its Web Specials Sale. (The discount is taken from the item's original price; it doesn't stack with the sale price.) Plus, Greater Rewards members receive free shipping. (Not a member? It's free to sign up.) It's a great spot to shop high-quality outerwear if you don't mind last season's styles. Deal ends November 13.
Making even one of these mistakes can easily cost you tens of thousands of dollars.