I bought a pair of these, so I could have them mirror each other like in the product photo.  The first one went together nearly without a hitch.  Any difficulties I had were mostly user error. (Hint, when the directions say to only tighten things up 70%, it's really good advice. Also, only 4 of the six holes on the bottom shelf actually match up with where they're supposed to be. It's fine.  Plenty sturdy without the last two.)
The second one, if I hadn't put together the first one already, would have been obnoxiously challenging. one of the feet was on the wrong gauge screw, and another spot on an upright hadn't actually had the screw threads cut into it. Thankfully, that screw was also somewhat redundant, so I was able to just press on without it.  
Be warned.  If you're going to mirror them like I did, a little bit of creativity and problem solving will be needed because the instructions aren't written for it.