What is up with these prices?

Why are these digital copies of some books priced as though they are physical copies? Examples: Call of Cthulhu Keeper Rulebook -- $54.95 physical MSRP, $27.95 PDF at Chaosium or DriveThruRPG, $54.95 digital on Roll20 Call of Cthulhu Investigator Handbook -- $49.95 physical MSRP, $22.95 PDF at Chaosium or DriveThruRPG, $49.95 digital on Roll20 Really? You can't even match the PDF price from the manufacturer? This is a huge premium for no compelling reason, especially with the physical versions having been out long enough to sell for lower than MSRP on Amazon. Why are digital versions being sold at physical prices?

My understanding is that it is due to the integration with the platform.  So, basically you are paying for the convenience of having someone else integrate the info rather than you having to do it manually in your games.  After that it is up to you to decide whether you can more easily afford the cash or time.  Since I mostly run "unsupported" game systems, I end up putting in the time.  :p

A PDF takes minimal time to produce, since generally, most professional books are laid out in Adobe InDesign, and can be exported to a variety of PDF formats in a few clicks. A book on Roll20 has gone through hundreds of hours of conversion time (depending on the system and level of integration), and incur licensing fees, all of which must be paid for. It is even possible that a given licensing agreement specifies a minimum price, to avoid the original publisher from being undercut.

In most instances the owner of the Intellectual Property sets the price that Roll20 can sell its products for, so it is not really Roll20.