Originally Posted by
LTNman
Just like printer manufacturers where the ink can cost more than the printer.
I think everyone expects to pay for the ink. What they wouldn't expect would be a fee payable when inserting the new ink cartridges.
After all, though you've already paid for the printer ( per-passenger departure charge ) you could have bought ink ( flight ticket ) from a third-party ( airline ) and the poor printer manufacturer ( airport ) has to make money somehow...