The U.S. Postal Service (USPS) has a constitutionally guaranteed monopoly on first-class mail. In 2015, it charged 49 for a stamp, which was not the profit-maximizing price-the USPS's goal, allegedly, is to break even rather than to turn a profit. Following the postal services in Australia, Britain, Canada, Switzerland, and Ireland, the USPS allowed Stamps.com to sell a sheet of twenty 49% stamps with a photo of your dog, your mommy, or whatever for $22.00 (that's 110 per stamp, or a 224% markpp). Stamps.com keeps the extra beyond the 49 it pays the USPS. What is the firm's Lerner Index? Its Lemer Index is (Enter your response rounded to two decimal places.) If Stamps.com is a profit-maximizing monopoly, what elasticity of demand does it face for a customized stamp? The price elasticity of demand is minus sign.). (Enter your response rounded to two decimal places and inchude a