Hotlink, but become expensive in recent year
for esim GlobalYo not too bad, affordable while stay connected, used quite few times during short stay in Taiwan, their regional place is cheaper than country specific plan so choose carefully.

AirAlo have signup offer for 300mb for 3 days
https://specials.priceless.com/en-ap/offers...rId=&productId=

But recently not using anymore, fierce competition on Sg telco keep offering free big international roaming plans is rendering other esim plan effectively useless.