Read the fine print

Seems like a worthwhile change:

GS25, one of South Korea’s biggest convenience store chains, on Tuesday began a trial accepting payment in U.S. dollars, yuan, euros and yen.

…but…

If all goes well, the service will be extended to all the chain’s stores nationwide, more than 12,400, starting Feb. 5, except those stores that choose not to offer the service.

So, it won’t be universal. Also…

Service operators in each store will ring up prices based on Shinhan Bank’s the daily exchange rates plus the service charge.

Emphasis mine.

Look, I’m all for stores trying to make things easier to pay for goods. However, if there’s going to be a service charge, then tourists might as well use credit cards from their home countries despite an international transaction fee. Why should tourists be carrying around foreign cash in 2018, anyway?