Interesting idea. Don't know how it would play, which I think is a good thing -- it means it's a novel concept.
I think it would be more interesting if you could do something to make it last longer, e.g. remove a counter whenever opponent plays an action, add a counter whenever you play an action.
The main issue I see is that there are games where you can set up an engine where you play dozens of actions per turn. That would make this card entirely useless, if the opponent does so. OTOH, it means you might be able to permanently set up +$1 or more every turn.
But that might be OK. Situational is fine.
Needs testing and probably tweaking, but I like the concept.