Even the Post Office admits there’s inflation; they cite it as the justification for their April ‘11 rate increase.
That bigger bill at the check out counter must be all in our minds :)
Obviously our government thinks we have been successfully dumbed down enough that we will never figure out they don’t report the inflation on the things we need most food, energy, etc.
You have to increase the price per piece to end up with the amount of revenue needed to operate the total system.
In the aggregate USPS costs less now than it did 3 years ago.