When I first got the blueprints for my Morton building I was blown over at the level of detail and effort that went into them. There were about ten pages of detail on every aspect of the building, including all of the specifications required by my town. (Snow load, wind load, etc.) Each page was sealed by the architect. It also had a sealed page from the truss manufacturer. Each page was roughly 2' by 3' and they were bound together like a book. I got about 10 copies which seems like a lot, till the code official wanted several copies, and each trades person involved in the building wanted a copy.
I could easily see how those blue prints cost $500 to $1,000.
Chris