My fact-finding venture has produced results. It seems that Amazon's createspace does produce print on demand books for a few dollars cheaper than Lulu.com does. The biggest boon however should be in the shipping costs, as I know from experience that Lulu gouges on international shipping, and Amazon is, well, Amazon. Here's the publishing versions of the COT-O cover and the book itself.
I would like for the blog readers to check out the pdf file and offer any suggestions or comments about the formatting, as this is the prototype for how COT-R will be formatted.