&#62; We're happy to pay per-lb to ship stuff via UPS, but we don't want to pay per-lb for the bags we check?<p>I went on a trip recently.  The combined weight of me and my luggage was perhaps 225 pounds.  The combined weight of the young lady standing in line behind me and her luggage was probably 165 pounds.  She had to pay substantially more to check two bags instead of one.<p>As I understand the reasoning, luggage prices increased due to the fuel cost increase of a couple of years ago.  Yet somehow me being a foot taller, weighing 70 pounds more, and checking only one bag is cheaper for the airline?  I don't understand it.