Some countries collect the departure tax at the airport and others have it in the ticket. It's much more convenient to have it in the ticket, but then it becomes less visible and countries feel freer to raise it. Thailand was B500 in cash and jumped immediately to B700 when they got it in the ticket. The Philippines still collects at airports and actually has gone down at MNL to P550 now. Indonesia's amount is well in line with other countries.