Maybe worth it. The charcoal bin is missing and the only other possible hindrance would be if you don't like the conversion he's made for the larger propane tank. You can't mount it underneath like the smaller ones because the thin frame and plastic table won't support the weight (over time).
The crack in the table - if not too extensive - isn't that big a deal. A simple, clear 2-part epoxy can make it as good if not better than new.
I personally would have to have the charcoal bin at his asking price, or my offer drops by $30. Or, personally, I drop interest altogether.
There will be others.