If you're suggesting that maybe I have an issue with this service I can assure all potential buyers that I certainly do not.
I usually sell limited quantities (maybe 15 or so) of each of these blogs. Most of the people that buy them are SEO providers and add them to their services (maybe 1-5 blog posts included in a 100 post guest posting or PBN package or selling a single post as a Fiverr gig, etc.). I don't own these blogs, they are on the University domains not mine, I just find access to them. And I don't have the time to do an actual SEO service with them so if someone else wants to buy my instructions on how to get their own blogs (these aren't my blogs, I make mine and they make theirs they are just on the same root .EDU domain/university) from me and provide that service then that's great - people who just want to pay for a blast of posts but don't want to setup the blogs and write and publish the posts (time consuming) now have a solution to that which I don't provide.
If he just purchased the instructions on how to create blogs these and then turned around and sold the same thing that would be uncool. This is a totally different situation than that, meets a different need and I fully endorse it.
Best of luck with your sales on this one OP, a few high quality articles spread across different .EDU domain blogs make for great tier 1 properties. These are diverse and authority domains with full contextual posts, most all the positive onsite SEO factors you'd want are present here. Buyers in high competition niches you may consider purchasing or adding tier 2 links to your finished and published blog posts to boost their juice even further for added value, I do this often with nice results one of these posts linking right to your money page and then having wikis, blog comments, profile links, etc. pointing to it can make a difference.