>Volume 1 of the Cambridge went through DP and is on PG. 23041.

Well, 23041 is just the index, a selection of five of plays follow.  So if one wanted the index plus the five plays included it would require “special handling.”

And the plays (while I personally like them) are not the most famous, leading to the question “Why not the most famous?”

And then one has the problem that the generated epub and kindle (mobi) for these plays is really pretty bad.