Yes, but there are special treatments that are new, experimental here and expensive at the only hospital to offer the treatment and it was a public hospital. . Her treatment went on for months and surely saved her life. It was not available anywhere else in Thailand. This was not a matter of staying in a comfy room. I don't know the system, but I.assume not every option is 30 baht. And yes, I was paying the hospital bills directly. There were additional expenses of spending months in a condo near the hospital and paying aides to care for her during this time.
I did not keep track of all the expenses involved. And that are ongoing 4 years later. She has a rare and incurable disease which with lots of attentive care, is mostly in remission the last 9 months. If you are coming to live here with no medical insurance, things can happen.