Kindle sales in the millions? Kindle sales account for about 3-5% of Amazon's total revenue, according to Internet stock analyst Frederick Moran of The Benchmark Company.

Analysts are currently forecasting that Amazon's total revenue this year will be $33.2 billion. So using Moran's estimates, Amazon may generate as much as $1.7 billion in sales from the Kindle this year. Moran added that he thinks the company has probably sold millions of the devices over the last few years.

http://money.cnn.com/2010/08/25/technology/kindle_sales/index.htm