Answer by  
                                                                                          bitchstewie (489)
                                                            
                          
                          
                                                          I dont believe postage rates change often enough.  The USPS is losing billions of dollars yet they charge relatively little to ship mail.  I few extra pennies could assist the Postal Service to cover its expenses.  It is quite a bargain to be able to ship a letter across the country for $0.47.