The package contents were well protected and withstood a gash to the outer box during delivery.  I'm happy to say all the pieces were in top shape.
With the backing being cardboard that ships folded, I wasn't able to get a completely gapless interface between the cardboard and the floating shelves.  Two slight gaps appear close to where the folds were.  With books on the shelves its not really that noticeable, but it would be great if the back were a thick single piece of wood.  I'd pay more for that.