At least Epix has an occasional exclusive movie once in a while, which does give it slight value.
The only thing that give the redbox service value is the 4 freebies at the kiosks, because their streaming content is severely lacking at this point. I guess that's how they cover up their lack of content.
That's not even a value. Since I already get EPIX content for free I'd be basically paying $8 for 4 rentals went I could get 4 rentals for $4.80 normally.