Paintings of numbers for sale

Sala, an artist from Zürich, Switzerland, is selling 1000 paintings of the first 1000 numbers. The selling price of each painting is calculated like this:

Value = 1000 - number.
Initial discount: 90%.
Current discount: 80%.
The discount will decrease by an absolute 10% for every 100 paintings sold.
Min. price: $40.

Check out pictures from the kickoff event at V-Gallery in Basel, Switzerland on February 12, 2006.

So far, Sala has sold 171 paintings. A pretty cool idea. Why didn't I think of it? :)

(Via Boing Boing)