Edinburgh airport drop off charge is a nonsense

If you haven't heard BAA want to charge £1 for passengers to be dropped off by the terminal building at Edinburgh airport. They say the charge is to pay for improvements to the drop off area. But the amount raised by this charge will surely pay for much more than that. It is just another way to get extra revenue. Surely they must be getting enough from the extortionate charges they already make for parking by the terminal.
I think BAA have done a great job with Edinburgh airport which is world class. But I think to impose a charge when many people are worried about their jobs and income is extraordinarily bad timing and a PR disaster.