Quoted from john17a:thanks all ill look at other home roms and see if they are the same
Some are, some aren't.
TZ's 9.4H still has Pricing Adjustments in it. You can even turn the "Free Only" message off, and have the game count credits. Only thing is that when "Credits 0" appears, you can still hit start.
It depends on the game and programmer how it was done.