Well, you don't need to guess about that
Sorry, didn’t mean to imply that I was in any doubt that buying attitude improvements was too cheap, only that my knowledge that it is is based on testimony and evidence here rather than my own experience.
I’m not a huge fan of the mechanism, and wasn’t one of buying reputation by donating to temples in the first games either. But if it’s kept then at the very least it seems there should be a steep sliding scale, where paying to bring negative attitude up to neutral (for example as compensation to restore merchant attitude after trying to steal from or near them) might cost what it does now, but raising attitude above neutral becomes progressively and then prohibitively more expensive.