I am overall happy with this purchase. Although not perfect, this is one of the best quality flat packed I’ve seen. It will take almost a full day for 2 kind of inexperienced people to build it. They don’t provide the wall fixing for the two wall units and the shelves were impossible to hang with the provided fixings, so like others said we decided to drill it into the wall. 
The instructions don’t have any words, only pictures which can get confusing. 
Wayfair did a mistake on our order which we are still waiting to be sorted but overall I was happy with them and the delivery service. 
Another thing to mention is that the base unit is very low, so you would need a wall tv fixing