Monopoly BAD!  (Unless you're the US Postal Service)

under federal law—Code of Federal Regulations, Title 39, Chapter 1, Sec. 320.6, paragraph (c), if you really must know—its competitors are required to charge twice as much for the same enhanced services. "Yes, the Postal Service actually sets our rates," says UPS spokesman Tad Segal.

http://www.bergesch.com-Our HomePage