Yeah, there were plenty of details I didn't know so I went with "best case". The Gran Sport appears to be top of the line plus I picked the largest engine option. I didn't add any other options like they list (sunroof, cd player, wire wheels, etc, etc .... I have no clue what it has vs what's standard).I looked at blue book, but without knowing more particulars about the specific car I decided there wasn't really a point in trying to value it.
Point is, if it's less than a Gran Sport, has a smaller engine, and so on, it's worth even *less*.