I changed half at 23.95. The other half before I go trip. Average down/up. No one really knows when is the top and bottom. Dun heart pain. Just change and enjoy the trip. I last went to tapei is 8 years ago and the rate then was 20. Not 23.xx. not bad liao. Lol
Have money and change is best.
Or change just before trip, then dun bother too much about it.
