Bumrungrad in Bangkok are considered expensive and they currently offer a package at 26,000 baht. However, I'm sure the cost increases if they need to remove any polyps.
\https://www.bumrungrad.com/en/packages/packages-center/colorectal-surgery-center
I used them about 5 years ago it was all done very efficiently, although luckily I didn't have any polyps.
So, 60,000 seems high.