Worried about the cost of cosmetic procedures abroad + planning a trip

Hi, I'm Suong from Vietnam. I'm planning to go to South Korea for a cosmetic procedure, but I'm really worried about the budget. I've never done this abroad before, so I don't know how much money to prepare for the entire trip. Can someone help me understand the costs better?

I'm trying to calculate: flight tickets, accommodation for about 5-7 days, food, and the cost of the procedure itself. I've done some research but still feel a bit lost. What's the most reasonable time to go? Should I stay longer for recovery, or can I return sooner?

I'm also unsure whether I should plan in detail beforehand or be more flexible. What do people usually do when they go abroad for cosmetic procedures? I would be very grateful if anyone with experience could share, or even just listen to my worries 😅