Bob and Roberta Smith: 'As an artist, the price of art makes me want to scream. Munch's pastel drawing of The Scream, one of four versions, sold for $120m (£74m) last week in just 12 minutes. When the bidding reached $100m, the audience applauded. As he recorded the final offer, the auctioneer joked: "I love you." What is that love born of? It would be mean to say the love the auctioneer proclaimed was simply born of greed. After all, perhaps you really have to love art, love The Scream, and love its buyers, to value it at £74m. But trophy prices that only the super-rich can afford are damaging. Few public collections could even begin to raise £74m for a single acquisition.'