Real Estate: The Sustainable Investment (Kindle Edition) by Glen Sweeney for free.  Here is a screenshot, along with Kindle devices for reference.  The paperback edition usually goes for over $15. 7" Multi-Touch Kindle Fire for $199.00 9.7" Wi-Fi 3G Kindle DX for $379.00 6" Wi-Fi Kindle for $109.00 6" Wi-Fi 3G Kindle for $189.00