I'm not sure what guidelines Logos follows here, but while viewing the Classic Commentaries and Studies on the Epistle of James I noticed what I believe to be the same resources in two different Pre Pub collections:
Manton's:
CC on James (Manton)
Complete Works of Manton Vol. 4
and again with Stier:
CC on James (Stier)
Works of Stier
I guess I'm asking if this is intentional, unavoidable, and/or something Logos plans to do with other author collections and the Classic Commentary series? In this particular case, Manton and Stier would be my only reason to buy the Classic Commentaries and Studies on James Collection except for Johnstone.