I gave it a 3 because it took about 4-5 hours (one person) to assemble. 
The scanner slide is 18 in depth, not the 22 inches stated in the Q&A. I contact Wayfarer to verify the depth, they told me it is 22 not true! Consequently the scanner sticks out 2 inches.

 In most steps the instructions calls for one size mounting screws except for steps 8 and nine they call for 2 different sizes keep this in mind, I didn't, so I had to redo the step. The holes to mount the vertical tubes supports in step 21 do not match, you have to carefully force it to tube to into place in order to mount the table top. The sliders for the drawers and the scanner slide are a bit confusing, You don't which end is towards the front or rear. The slide brackets should have been mounted  by the manufacture.
Over all its a very nice desk and very sturdy! I like it!