After programming a bruteforce solver for this game, I'm almost sure we can claim that we did the best score for every level, except maybe for level 98 for which my algorithm is too long. Moreover, for this specific level and according to my program, it is impossible to do 420 (or better) when we know that 480 is possible. Therefore, the best theoretical possible score is (for now) 28300. Except if I made a big mistake, the score of Slangford12 is impossible. But well, he may precise us how to improve our score.
By restarting a level using "main menu/continue", your pocket money remains unchanged but the coins reappear. Thus you may give a tip as big as you want. The Pizza Guy should be more grateful ..!
 "Frugal Knight"){kind=icon}
 "Overlord's New Mansion"){kind=icon}
thanks for this report! how could I have never noticed it... I'll probably fix in next update, and maybe I'll make the pizza guy a little less grumpy