Speaking to my insurance company, the rates in Thailand are not reasonable. Friends have had similar conversations with their insurance companies.
Costs in Thailand are well padded once the hospital knows that an insurance company is involved.
eg I went for biopsy at a very well known hospital in Bangkok. When I told them that I was paying privately, the quote/cost was 70,000 to 80,000 baht.
When I asked for a detailed bill (and inadvertently said 'for insurance) the bill lept up to 120,000 baht.
'reasonable rates'? More untruths from politicians.