The $600 included the 3-piece L-shaped desk, the small drawer cabinet (not really visible in the photo), and the bookshelf. Overall I think that was a fair price for the set. I looked at many desks in the $1000-5000 price range (big sets with a credenza, file drawers, bookcases, etc), and I liked the simplicity of this one the best. I actually spent a lot less than I was planning to.
$600 isn't a lot of money to me though, so perhaps the perceived value is a relative thing. For anything that costs less than $1000 or so, I don't really have to consider the price. It's just a question of whether I want it or not.