Amazing idea, congratulations on (yet one more) a path breaking piece.
RT @DBaqaee: New paper on welfare measurement with non-homothetic preferences. Our paper is inspired by recent excellent work of @XJaravel and @DanialLashkari . We have a different angle on the problem we are excited to share. I think the intuition is pretty neat! https://www.econ.ucla.edu/arielb/welfareCS.pdf