Planning medical treatments abroad - total cost, flights, and accommodation.

Hello friends! I'm planning a trip to Korea at the end of this month and have always been interested in getting a psychological assessment done. However, right now I'm feeling quite overwhelmed. The total cost of flights, accommodation, and the assessment itself, as well as how much time I'll need to allocate, is quite stressful. How do you plan your trip before getting an assessment?

Also, I'm not sure how many days I'll need before taking the test. Has anyone been able to return after getting an assessment? How did you balance your expenses for flights, accommodation, and the assessment? I want to go, but it feels too expensive mentally. I'd love to hear from anyone who has already taken this type of trip!