If I'm not mistaken you have this backwards. USPS is the one subject to a price floor that's tied in some way to cost, since they don't have the profitability

If I'm not mistaken you have this backwards. USPS is the one subject to a price floor that's tied in some way to cost, since they don't have the profitability constraints that UPS/Fedex do. EDIT: Never mind, there are apparently price floors enforced on both USPS and private postal companies.