I found the following on another forum and thought it was interesting.....
http://www.calculatedriskblog.com/
"NAR estimates that about 1.8 to 2.0 million first-time buyers will take advantage of the $8,000 tax credit this year, with approximately 350,000 additional sales that would not have taken place without the credit."
"You can calculate the new $15 billion projection; 1.9 million times $8,000.
"But this only resulted in 350,000 additional sales. Divide $15 billion by 350 thousand, and the program cost is about $43,000 per additional buyer. Very expensive.
Now the National Association of Home Builders estimates that expanding and extending the credit through 2010 would generate 500,000 additional sales at a cost of about $30 billion. So this is approximately $60,000 per additional house sold. And I think the cost will be much higher."
Quite the deal, huh?