Does come unpainted.  Bringing the box into the house and assembling would have been easier with a second person, but can be done by one person.  Some of the pegs didn't exactly line up with the holes, but a rubber mallet worked for getting the pegs into the holes without issue.  I couldn't get the back pieces in (too flimsy) but bookcase looks good without the back.  Not including painting, assembly took less than two hours.

Pros: Seems sturdy
Cons: Assembly could be easier