Good Desk surface is nice in one piece like picture. Riser shelf is optional, but the surface is indented in the back where it goes.  Without the shelf you can’t place monitor as far back as you may want.

Bad Parts weren’t labeled (three identical cross bars have slightly different bolt patterns).  The redwhite designs on desk legs are stickers you apply manually with no guidance you have to figure them out yourself looking at the picture from the website.  Also there are stickers for riser shelf legs that I didn’t even bother with.  Cup holder and headset hanger are nylon these are metal on some other desks.

Final appearance B ( nylon parts, surface restricts monitor placement without shelf or monitor arms  )
Assembly D ( sticker placement guesswork, lacking part labeling )