$300 data fee is ridiculous! even ICE data fee is much lower. 300yen data fee is rather low. There are some exchanges which charge very low data fee. and you can see their products have low liquidity. didn't trade TSE. so no comment about TSE.
from my previous post 300 Yen... that's ~$2.70 USD.this is also hilarious. do you think your answer is complete?
Different halting procedures, certain order types function differently, after hours is much more limited and shorter, one hour lunch break middle of the day, both price and volume have to conform to a tick size minimum which is different for everything based on price/volume and is dynamic.