We mailed 2 packages today, one to Utah, it wasn't very big and was fairly light. The other was bigger and heavier, it went to Maryland. Was it expensive? Is the Pope German, do bears take care of business in the woods? Of course it was expensive. For what we paid I could have bought a small pony and restarted the Pony Express.
Granted I sent them UPS and not the US Mail, but there's not a whole lot of difference in their prices. The only difference is UPS makes a profit and the US Mail is going broke.
The main reason I used UPS is that it's only a couple of miles from my house, the Post Office is much farther, so I console myself that saving gas makes up for the extra cost.