@treydad Thanks for the response. I was aware of the official fees, but not the night-time 21:00-5:00 increase of 50%.  Still, I know these drivers pull this nonsense because they are pocketing the money themselves.  This is why I look the other way.  I guess I will have to be rude next time and let them know at the end of the ride we can "agree" on a fair price or I can report the incident.  I really do not want to do that, but very few of them know how to haggle properly, and insist I pay like 150% markup for a taxi.  I guess we should stick to private ones.