At the moment Lulu.com are having a promotion which means you can buy the paperback version of the book at 30% off.
The offer is only valid when you make your purchase in US Dollars, but you can easily change your preferences here, if you’re not from the US: http://www.lulu.com/shop/stores.ep
The promotion code is: SPRING 315
Note: This is a time limited offer, and I have no chance of knowing when it will finish.
Go to LULU.com by clicking here
Learn more about the book by clicking here: