I would encourage you to take a look at the used and new copies of Complete Guide to Online High Schools available over at Amazon. There are now twenty-five copies available.
Why is this interesting?
I believe that only one of those copies has actually had a previous owner. Remember that CGOHS is printed on-demand by Lighting Source. There are very few copies out there that are not owned by someone and that is a fairly recent purchase.
All the rest are small business owners advertising copies that they will then get from Lightning Source. By the way, most of those copies are for sale at a higher price than a buyer could get it from Amazon.