We put this bookcase together twice because the holes of one shelf were erroneously drilled, placing it 4-5" forward of where it should have been.  Wayfair gladly replaced the bookcase, and the 2nd assembly went according to the manual.

Not particularly sturdy but it should be fine when affixed to the wall against which it leans.  Perfect size for holding a few light pieces of decor and a fountain pen collection.