Colin Gleadell asks if buyers have figured out that there are just way to many of Ai Weiwei’s Sunflower seeds:

For anyone keeping track of the price of sunflower seeds, Sotheby’s has a one-ton installation by Chinese artist Ai Weiwei, laid out like a carpet, with an estimate of £370,000 to £490,000. This seems cheap compared with the much smaller 100 kg work which Sotheby’s sold last year for £350,000 ($560,000). But then maybe people have worked out that there an are awful lot of sunflower seeds available. Apart from the 150- ton installation at Tate (of which Tate now owns about 8 per cent), these are various piles of seeds, priced by weight, each of which come in editions of 10.

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