For several years I bought myself Maftir Yonah as a birthday present. I decided what I wanted to give the Shul over the year and stayed within that budget.
One year one “charachter” decided to jack up the price on me. I simply outbid him by small increments until he decided that enough was enough. I told the gabai I will pay the last increase and let him have it. It was the last time he tried a stunt like this. And it was the last time I bid for Maftir Yonah