Link: http://www.nytimes.com/2009/11/23/us/23helium.html?_r=1&hpw
Helium-3 Crisis! Demand now exceeds supply by a factor of ten. The price has jumped to $2,000 a liter from $100 in the last few years
The NYT article fails to mention that Helium-3 is relatively abundant on the Moon.