In contemporary society it would seem self-evident that people allow the market to determine the values of products and services. For everything from a loaf of bread to a work of art to a simple haircut, value is expressed in monetary terms and seen as determined primarily by the 'objective' interplay between supply and demand. Yet this 'price-mechanism' is itself embedded in conventions and frames of reference which differed according to time, place and product type. Moreover, the dominance of the conventions of utility maximising and calculative homo economicus is a relatively new...