Where is it cheaper to exchange money?

pu1. If it's the main bank, it's 70% off

2018-06-23

OK

pu2. Don't do it at the airport. It's the most expensive

2018-06-23

OK

pu3. If you want to make it cheaper, I recommend the type of bank app!
I use Kookmin Bank's Reeve, so if I make a reservation with this and find it, they give me 90% of the exchange fee

2018-06-23

OK

pu4. Recommendations for WEBTOK or LIVEs

2018-06-23

OK