Concerned about the budget for an overseas procedure + trip planning.

Hi, my name is Oil, and I'm seriously considering going to Korea for a procedure I'm interested in, but I'm a little worried about the budget. It's not just the procedure cost, but also the flights, accommodation, and the time I'll need to spend there. I'm not sure how many days I should plan for, or if there are any ways to save money.

Has anyone done this before? How many days did you usually spend there, from the first day until you returned safely? And regarding the recovery period... if I stay there a long time, accommodation will be very expensive. I'd like to know what kind of accommodation others usually choose, or if there are any money-saving tips.

Also, regarding the recovery period after returning... how long do I need to rest? Because if I need a long recovery, I might need permission from my workplace, which is complicated. I'd really appreciate any tips from those who have been through this. Thank you for listening!