Works by artists including Wolfgang Tillmans, Tracey Emin, Marlene Dumas, Martin Parr and many more, are on sale for as little as £50

Paris-based auction house Piasa hosted online sale of 370 works donated by artists, designers and galleries

Hauser & Wirth is donating 10% of profits from its online exhibitions to “both local and global causes” as part of its new #artforbetter initiative