It was somewhat difficult to build with limited instructions and only crudely drawn diagrams to base your estimations from, but you can easily piece it together with some fiddling and trial and error. All up it took me an hour to build and I spent another 30 minutes finessing over the bolts and fixing a stripped tapped hole.
One of the tapped bolt holes stripped when tightening and I needed to secure the bolt with a nut on the opposite end, from my spares box, but other than that it was an easy build.
Overall, the unit is sturdy, holds my 80kg weight well and is of good value. Do recommend buying