The phrase “exit through the gift shop” became part of our cultural jargon with the 2010 work of ‘filmic graffiti’ about the street artist Banksy. Intended as a comment on the commercialisation of art, the ubiquitous phrase encapsulates the reality for art galleries and museums around the world: a successful gallery store is an essential element of the institution’s public engagement and makes a significant financial contribution towards keeping the doors open. And, yes, a sign saying “exit through the gift shop” can be spotted in almost all institutions from the Tate Modern in London to the recent touring Banksy blockbuster exhibition.