I did so much research by comparing prices on forums, Tiktoks, blogs, and inquired with multiple clinics, I noticed the ones with English speaking translators and have much more foreign friendly services/social media presence tend to quote higher. For example, I noticed typically, people of Korean descent visiting Korea or Korean citizens paid around USD 2000 for DES. I saw even last low as USD 1000. I was getting quoted around USD 3900-4500 (4000000-4821932 KRW) from clinics such as Marble, Cinderella, Dream, etc. I notice they are willing to negotiate if you mention other prices you've been quoted and/or if you're planning on receiving multiple services then using that as leverag eot negotiate. My DES quote with Wink was USD 2000 right off the bat without negotiations however they did ask that I bring my own translator.