Amazon Warehouse Deals
If you don’t mind open box or used products, you should definitely check out the Amazon Warehouse page, which allows shoppers to find great deals on everything from electronics to housewares. Plus, they frequently have promotion codes for further discounts on your first purchase. Buying from third-party sellers and individuals on Amazon is another way to get huge discounts on used items, especially previous generation electronics and older books.
Amazon Outlets

Another hidden gem is the Amazon Outlet section, where you’ll find markdowns and outlet prices on apparel, accessories, beauty products and household items. And speaking of household items, Amazon has a dedicated coupon page which is a great resource if you're looking for an Amazon promo code. They have coupons on household necessities like cleaning supplies, bath and beauty products, and groceries.