As long as I am making a PITA of myself -- Why does GUE list a "GUE Primer" class when there is none listed, or available, nor is there a book in the listing?
First of all, you're not being a PITA.
Second, I'm not a GUE expert nor do I play one on TV.
Can only tell you about my brief personal experience with them. I'm not familiar with the Primer as the only class I took from GUE was Fundies. An instructor usually lists classes if they have enough students to fill a class. If there is an instructor you'd like to take a class with you can contact them and put a class together with other interested divers. I did that for my Fundies class.
As for a manual, once you sign up for a class, the instructor will download PDF files into your student folder on the GUE website. Anyone, feel free to correct me if I'm wrong about why the GUE Primer class is not listed on the website.
Last, I personally feel any money spent on GUE training is money, and time, well spent.