TL;DRPaCo (Partial Common Ownership) NFTs are a modified ERC-721 contract where every NFT is always on sale at a price set by its owner.The owner sets a price for their own NFT and pays a Harberger-like fee, a Self-Assessed Fee (SAF), proportional to that price.This encourages every holder to price their token how they truly value it, eliminating holdouts and creating greater allocative efficiency.The fees collected from a PaCo NFT are a function of the project's overall value, as oppose...