Worried about the budget for plastic surgery consultations in Korea

Hello, my name is Best and I'm from Thailand. I'm currently thinking about going to Korea for a facial contouring consultation. However, I'm not really sure how to plan my finances. It's not just about the surgery or treatment costs, but also flights, accommodation, and how many days I'll need to stay, as I have no prior experience.

Has anyone been to Korea before and how did you plan your finances? I'm wondering how many days people usually stay. During that time, how many follow-up appointments are typically needed? Because if any issues arise or if I need to attend scheduled check-ups, it would be quite inconvenient, wouldn't it? Also, during which times of the year are the prices not so expensive? I'm wondering which month would be suitable.

Also, if this is my first time going, before I finalize all the expenses, what should be my first point of contact there? I'm worried about booking flights or accommodation only to find out I don't pass the consultation, or if there's anything else I should know beforehand. I'd appreciate some advice from you all.