I used an app for a while called Wish. You probably heard of it but if you haven't, they sell off brand products that are clones of the name brand product. I've found smart watches for as low as $25. The app is made by an Asian company but their products are not as cheap as something you would find on eBay. You should try this app out. There are other apps like eBates that just give you a discount too. It says you get a certain amount of money back depending on how much you spend. For example, it might say "$0.02 back for each dollar spent". There are many apps like this you can find to save money by using their app.