Techcrunch: We Know How Many Kindles Amazon Has Sold: 240,000

"Ever since Amazon launched the Kindle last November, we’ve been wondering about just how successful it’s been. The electronic book initially sold out and supplies have been tight. The Kindle is such a small part of Amazon’s overall business that the company does not break out how many it’s sold. But we found out anyway: 240,000 Kindles have been shipped since November, according to a source close to Amazon with direct knowledge of the numbers.
Doing a little back of the envelope math, that brings total sales of the device so far to between $86 million and $96 million (the price of the device was reduced to $360 from $400 last May). Then add the amounts spent on digital books, newspapers, and blogs purchased to read on the device, and you get a business that has easily brought in above $100 million so far. (Each $25 worth of digital reading material purchased per Kindle, add $6 million in total revenues)."