I can think of something, Robert ... perhaps you could contact me.

regarding difference of prices, please be aware that there is a difference in what you get: either (set of) tools or a real solution. With a couple of tools and some csutom development you might be able to achive nearly the same, but not necessarily for less money, if you take your own time and effort into account to define and create your own solution - and most of the time, a solution created as such is much easier to use and maintain - which might result in less total costs of ownership (TCO) than a custom combination of less expensive tools. Of course, expenses need to meet your business plan.

Regarding other LCMS, we used to run ILIAS (www.ilias.de), an European Open Source ECMS based on PHP, which is popular amongst European and German Universities, but did not fully suite our customers' needs to provide blended learning courses by private organizations, which would have been easy for us with a DNN based solution.