Munmun by jesse andrews is a young adult fantasy set in a world similar to ours but all of the occupants are different sizes based on how much money they have. Munmuns scale is actually geometrically incorrect if body size were actually proportional to wealth the rich would be astronomically large and the have nots about the size of viruses. In yewess an alternate america where money called munmun dictates ones physical size 14 year old warner his older sister prayer and their disabled mother all rat size littlepoors . Munmun takes place in a world similar to ours but with some striking differences on the whole your size denotes your net worth your wealth and the whole process of how that is figured out is quite daunting and it is explained to us in a manageable way