Just doing some google reading. Not sure if this has been posted before, but its pretty interesting. Perhaps someone with time, energy and patience can beat the courier companies at their own game. This link supposedly tells how to do it.
http://trueler.com/2010/09/13/ups-brokerage-fees-total-scam-fraud-cheating-avoid-it/
http://trueler.com/2010/09/13/ups-brokerage-fees-total-scam-fraud-cheating-avoid-it/