We arrived at Krabi Airport and booked a taxi right at the counter inside the arrival hall.
Because there was no shuttle service any more to Kluang Muang we had to book a taxi for 700 Baht. I booked and paid and then one of the office women offered me 50 Euro note for "Exchange" and she only wanted 700 Baht for it (in reality 50 Euro were about the double) but it the Euro note was very obviously a fake copy, perhaps only a colour copy printer.
I think it is very bad to have such a worker.
So be warned !