There was a similar game in this jam I played where you had to pay for jumps/dashes. Interesting concept but I think it breaks the gameplay up for a platformer too much. Maybe it could be cool, instead of having the player have to decide what to buy beforehand, just let the player play, walk/jump/etc and keep a running "bill" that they have to pay at the end of the level. Maybe they have a specific budget so it doesn't lose the charm of skill-based platforming and incentivizes the player to try to play as efficiently as possible.
Fun concept and I think there's a little something here potentially. Good job!