Nice thing! And educating :-) Ahhh the power of economy... ;-) Got almost all medals... almost, because after making all upgrades I received the Pro medal and the Deadweight one seems broken at the moment. While fixing make sure that the people that already reached this level would only need to reenter the game without having to restart the game as a whole.
I especially liked the option to customize the flappy $'s movement.
The idea of this game even made me think about possible adjustments, for example why not making something like flappy $ meets tycoon? The player would have an opportunity to make decisions about the owned business, which would affect the supply, demand (make for example campaigns introducing the product to a broader audience, changing the targeting). Sometimes an unexpected situations on the market could occure, making the game more difficult for a while and if the player would deal with it, would as well get benefits from it (special profit, experience etc).
The game has a great potential for further development :-)