Where is the cheapest way to exchange dollars?

pu1. If you use Woori Bank, Wibitok, and if you use Kookmin Bank, I recommend Live app
Both have 90% preferential exchange fees for major currencies such as dollars, euros, and yen
The rest is 50%

2017-10-26

OK

pu2. I'm using WEBTALK. It's good
This is probably the best since you give us 90% of the exchange fee
Hearing about Weepboo, it seems like Live app is the same

2017-10-26

OK