I beat the game and bought every upgrade there is!
Great Game one of my favorites
my other comment was being "processed" but cool game
HOLD DOWN R ITS SO WEIRD :)
guys hold down R on any level (if it doesnt work try level 2) everything breaks XD
go to level 2 and press reset you get $8 per reset
Tomato Squasher is one of the best to grind on