Not competition to me, just a collector adding to what he has + I enjoy Robert's books, he was a long time photographer of the band, the number of photos he took of the group easily is into the 1000's.
I get that, and totally understand about book production costs. But I found the Lamb pics underwhelming and don't feel like dropping another ton on them.
(That's my opinion but I checked with Melvin and he agrees).