These units, we bought two to stand together, arrived quickly, in good condition.  They were well packaged and all pieces were there as expected.  Construction was easy, each took around an hour for one person working alone. Instructions are fair, quite small and you do need to focus, but complete and straight forward to follow if you do so.  Comments I have seen around misaligning shelf bolt holes may be because they have holes which are specific to each shelf, ours fitted perfectly once we checked to make sure each shelf was the correct way around.  My only mild concern is that once constructed I do have a slight bow in the middle legs resulting in a minor gap when placed together as a set, otherwise a good shelf set, at a reasonable price, definitely better than my previous attempt at getting a similar product, I recommend these units.