Sustainable Appliance Ownership: Yuppieyo Buying & Selling Introduction Today’s fast-paced world relies on sustainable appliance. Refrigerators, washers, and air conditioners make life easier and more comfortable. New appliances are pricey. After buying new appliances, many don’t know what to do with their old ones.Yuppieyo, an online marketplace that sells secondhand appliances at low prices, overcomes …