It's a genuine response
"Simons gestured at the paintings lining the walls. "The prices are a bit steep for impulse buying. Most of my customers are regulars, collectors. Though sometimes one of those window-shoppers will wander in and fall in love with a painting, then go home and save up pennies out of the housekeeping or the beer money until they have enough to buy it." He smiled. "Those are the best, the ones that know nothing about art and buy out of love. It's a genuine response."" – Deborah Crombie, Leave the Grave Green, p. 71-72.
* a chance encounter with a colleague turned me on to Deborah Crombie's Duncan Kincaid & Gemma James mysteries. Artists feature prominently in several of the novels that I have read so far.