Yes this takes 1.5 hrs to put together and with 2 people. However, the assembly was extremely straightforward. I recommend the smaller of the sizes. 

The instructions and pieces were clearly labeled with chronological numbers and letters. Nothing was particular heavy, except for the box it was initially delivered in. Quality of material is very high and sturdy. The adjustment buttons can be placed on either the left or the right of the desk. Having the wire basket is a plus! Would recommend for anyone looking for a standing desk.