<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by TomBascom:
Does that mean that there is an active market for them? Are they bought and sold on e-bay, for instance, and if so what is the going rate?</font>
Actually, you really aren't supposed to sell them. But they come with a booklet of free drink coupons - on Ebay you will see most people sell the coupons, and then say they are giving you the free flight as a bonus.