oh yes that 150,000 IDR tax... well what happened was at the boarding gate area my boarding pass beeped. well I was surprised cuz there wasn't any upgrade possible... they took me aside and and CX agents asked for that 150,000 IDR. Added dead cost, not efficient for the miles run....
To be fair I was happy to be out of that airport. I'd paid 100 USD to get out of there....