Wow, so killed the boss in the lower right with level 4 money maker (skill) and the pirate sword. Finishing $ was 68,035!! Assuming this is a bug of some kind, otherwise, give it a try for a lot of easy money.
Couldn't understand why I was getting downvoted before, I guess there is a double flip award; I finally got it. So I will amend my comment to say the double flip detection is kind of crap because it misses quite a few of them. Also the rendering thing where you can't select more than 1 level from the main map.