1.   The painting would fetch millions of dollars if it was sold on the open Market.

2.   The painting would fetch several hundred dollars on the open Market.

3.   Three paintings fetched three times their expected price, going for over a hundred thousand pounds.

4.   The latter three are accomplished cat artists whose paintings fetch thousands of dollars.

5.   Until now, the painting had fetched interest only at lower prices.

6.   Later, however, he decided that he could systematically measure changes in the overall market with a comprehensive database of the prices that paintings fetched at public auctions.