In a market already tilted in favour of landlords, these apps could further push up prices.
The dress Marilyn wore to sing happy birthday to JFK sold at auction recently for a record-breaking $4.8m.
New York's Met just announced more job cuts to balance its books as the shifting tastes and demographics make it harder to make a museum's ends meet.
What, exactly, was going on at the Knoedler Gallery in the years leading up to a forgery indictment?
South Africa's art market has seen substantial growth in the past few years. But investing in art remains risky and produces limited returns.