Study.com and Excelsior College

[dfrecore]

Based on the changes TESU has been making lately, I'd say it's likely to shift once again. Maybe it's finally COSC's time to shine

That would actually be my guess as well.  They are definitely the cheapest at this point, but I think the main issue is the length of time - 3 months for the cornerstone and then 3 months for the capstone.  But this is a guess, I'm not sure if this is how it works.  If you were able to complete the cornerstone more quickly, or take the capstone concurrently, then it would be a better option.

But once TESU enacts the 3cr cornerstone in July 2019, then the price starts to become an issue, and COSC will look a LOT better than they do even now.