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They exist. Check other review sites for places in Garden Grove and such.

If you're Korean's good enough, you can haggle. There are a ton of these places around major train stations, especially Daejeon, Daegu, and a few other places. I was offered 20 min for 40k many times...

Nah. The soldiers get the bottom of the barrel for the most part because most of them don't speak the language and can only pick up on the ones that hang out in Itaewon.