The post office could charge less for stamps if they didn't have to fill our boxes with low cost worthless advertising and campaign promises. I swear most people could heat their house with the "free" paper that gets stuck in their post office box.
C'mon now, $40 at Wendy's?
The modern US Post Office is an employment program first and a delivery service second.
Where's the Pony Express when you need them ?
If you look at it in its most elemental form you are paying .66 cents to get something from east coast to west coast. Over 3000 mi. It's got to be worth $1 to get grandma her birthday card on time.