I am very pleased with this bookcase.  It seems plenty sturdy.  I needed a long, low bookcase to place under two windows, so I turned this bookcase on its side and it works well.  The only problem with turning it on its side is that there are some screws that show on what is now the top; however, I can cover most of them with a plant or books.
I am an 85-year-old women, and I was able to assemble this easily within a couple of hours.  If I can, you can too!