Artists since have refined their messages. In some cases, the work itself encapsulates ideas about the mechanics of the (art) market as well as questions about how value is ascribed. The Sunday Painter, a gallery based in London, presented Marsh Lane Diversion (2016) by Rob Chavasse at Frieze London, which consisted of stacked plasterboards with an image printed on the front of them. The boards had been temporarily removed from circulation of the building industry but had to be returned to it after the fair – a buyer could, for £20,000, purchase the right to recreate the work but would never own the boards themselves. The work’s physical material is always borrowed, fed back into a different economic circulation system after being deinstalled. According to the gallery’s Tom Cole, it is still available.