Painting for Pleasure and Profit

I was recently informed of a Chapman Brothers exhibit from 2006 where the artist's, for a fee, would create a portrait of a member of the public which they exhibited in their exhibition 'Painting for Pleasure and Profit', this is obviously interesting to me as it contains similar elements to my own project, interacting with the public to create work, although my piece is more a selfless exploration of Identity rather than an exercise of obvious profit making like the Chapmans.