How is the maximum price level determined in Theme Hospital?

I've done some preliminary investigative work, and in reality, it's not actually quite so simple: there's no 'set' price everyone will pay: each patient seems to have its own payment tolerance.

It appears true that even as low as 105%, some patients will refuse to pay at the base reputation level. At 145% it appears no one will allow treatment anymore, while with the 100 measurements done so far the in-between formula appears linear.

E.g. at 145% price there's a 0% admission rate, at 100% it's 100% and the rate is linear in between (at 130% price you should see 1 in 3 patients continuing).

There's some avenues to explore next;

• study the effects of reputation
• inspect the game's code to see if we can learn more from it.
• take more measurements to get a statistically sound result