David Hinojosa has got a project called Stock Artist that offers a simulation (for now) of a rationalize the art market.
I’m not sure I fully understand the concept, but this appears to be the nut of it:
The central nucleus of Stockartist is the “transformed art piece’s concept.” This concept consists in dividing the value of one work, or a group of them into little pieces called “stock-art.” The stock-arts have two characteristics: they represent one part of the value of the “transformed art piece” and they are themselves art works. In other words, the stock-arts are at the same time art works and an instrument of investment that besides of representing their own value, they represent other’s. The stock-arts share some common physical characteristics as: maximum weight, maximum size, security codes, etc, and they contain unique characteristics imposed by their creator.