This is pretty neat! I'd never read the comic this is based on before, and I like your take on it. It's actually really cool to be able to walk around a 3d space and see money costs stacked into piles, from mundane regular things to events to people--it's great! And it's actually a lot more approachable than the comic, at least to me.
I do have a few suggestions, though. Most of these for after the jam:
--It really looks like the money is a looping texture on the top, and it cuts off, removing the realism at points. Can this be fixed?
--I don't know if seeing the object the money represents (say, having a person standing on top of the money that represents) would be better or worse. It's something to consider.
--I like all your ways to expand this game that you wrote in the description (except for the zombies--I know that's probably a joke, but still).
Nice job on this. :)