Flawed value!  The style, colour and price of this flat-pack bookcase was to our liking, but when I stated to assemble it, I realised after 45 minutes of unpacking and checking all components , the left hand side piece was missing and I had 2 right hand sides!
Thankfully a phone call to Wayfair  had a RHS piece delivered within the week, a good service.
I suggest that the manufacturer of the pack improve the quality of the images on the A4 sheets, as the details of the rear of the side pieces was not clear, which delayed the time when I realised the assembly problem was the lack of Quality Control at the original Chinese  supplier, not my misunderstanding the assembly instructions!
Also, the diameter of some of the shelf support holes was too small, so I had to use a hammer to fit the supports. This is not easy when the nearly completed bookcase is free standing in the middle of the room, as it is easy to knock over.