It depends. Most websites advertise coupon codes claiming to be site wide, but they are not. Those will never really work. In reality, most coupon codes only work from specific sellers or for specific products on Amazon. Those will work more often if you use them within the promotional dates. Our list prides itself in being the best working list of those type of promo codes. We don't pretend to have site wide coupons because they simply don't really happen often.