I have a lot of friends around me who got double eyelid surgery at places like Busan ㄷㅍㅇㅅ, Busan ㅇㄹㅇ, and so on, and among them I thought ㅇㅎㅅ turned out the best, so I had my younger sibling do it there too.
They had eyes with every unfavorable condition, but I feel like eyes that should have been impossible to achieve came out. It really turned out well, though there is a bit of scarring from the epicanthoplasty.. But I think it was a worthwhile trade-off.
They did everything possible except lower canthoplasty, and it seems to have cost around 2 million won. Totally worth it.