Bookcase looks quite nice set up. 
The screws between the stacks are a bit of a pain as they have to be started as hand-tightened, and that gets old. I do appreciate that it’s a screw driver set up, rather than Allan key. 
The box came with a chunk ripped out of it, and into the styrofoam exposing one of the shelves, which was disappointing. 
The shelving and racks aren’t perfect either; most have small scuffs, gouges, or some sort of flaw. So you may need to take your time to flip things around to make sure flaws are hidden to the back. 
Would have been 5 stars without the damaged box and consistent material flaws.