We often forget the conventional methods of making money by selling used products, while focusing more on new methods like affiliate marketing and blogging. Selling your unused items can get you a decent amount of money. In fact, many people pursue this as a business opportunity. Just buy used items available in your city using your bargaining skills and sell them online. You could also clear out unused items from your house and get rid of the mess. You may also buy products online and sell them at a higher price.
Here are some websites where you can buy and sell used products: