We just finished putting this shed up.  First you have to have a level surface for this shed to work otherwise it will torque and things won't align.   It was pretty easy to assemble with two people.  The roof was a little difficult to get on, mainly because it can't be slid on from the front because the metal bar on the roof doesn't slide past the front of the shed, but with a lot of french persuasion we finally got it on.   We had an extra part AB.  No mention of them in the instruction manual but finally figured out they are to hand some kind of shelf on the back wall.  However there is no mention of any accessories being available for this shed, so its confusing.   I can't rate quality and durability until it has been in use for a while, but the web site won't let me skip it.  It looks good and if the door aligned a little better it would be easier to use.