Hard to build, but great customer service
I honestly love the YOMO shelf I got, but there are some frustrations along the way. Please do not try to build this yourself, no matter what. It is a 2 person job, and it's not a suggestion. It's hard to explain, but the way assembly is designed makes it so that you often need to put together 3 pieces at once before an area is stable to stand on its own. And since a lot of this is particle board, that makes them easy to break unless you have a friend helping you support the weight.
I had to order a few extra pieces because of I attempted to build this myself, and pieces broke.
However, the modularity and design of this just works so well for my space. And once it is complete, it looks great.