Yep, for $550 I would expect it to be in pristine condition and include some extras.
I wouldn't disagree with the comments about older, classic Genesis grills being better in many ways or at least the earlier 300 series with the E-W burners that some of us call the "sidewinder." On the other hand, I used one exactly like that one as my daily driver with very good success. I personally liked the sear burner and used it regularly. But, when I picked up a really nice Genesis Silver C and cooked on it, it felt like "coming home."
I still have the dirty, needing parts hulk of my S-330 waiting for restoration. I even have a stainless steel bottom and stainless steel back to replace the cheap, painted steel ones. I wonder how much I can get for it if it is well restored and has those non-stock stainless upgrades that address a good portion of the rust problems these have?