I did this with a blog once and just received an e-mail with a 15% off code that is valid until the 28th. The site is blog2print and I was pretty happy with my blog-book! In case any of you could use this, too, here is what they wrote:
"Through February 28th, save 15% on all blog books with coupon code MyBook15 at Blog2Print"
Re: 15% off if you want to print your blog