Agreed. 90% RTP is definitely too high as a default. Changed default RTP to 80% and $ per 1c meter rise to $2.50.
Added a “Reset to defaults” button, since the calculator would still show whatever you used last (so 90% and $2.00 if you were using the previous version). Now resets to 80% and $2.50. You can always adjust the RTP and meter rise to whatever you want, but defaults are now more realistic.