Love the look, but wonder if these books have no further redeeming value. Although the leather bindings add color, texture and pop factor aesthetically, maybe upcycling phone books or magazines might be more lucrative.
Perhaps it's entirely built of manuals for defunct software! I see so many of those in used bookstores despite the fact that no one will ever buy them...
Holy cow - bonus is the rainbow sorting of the covers. I wonder if the books are all glued together or whether gravity does the gluing? Interesting choice to have the spines face inward.