^^ I disagree, an unmolested low KM rust free e30 can have highly varied value, depending on the buyer. If I totaled my e30 today, I could be looking for years to find another one in the shape its in, therefore I'd pay top dollar. However, if you're just looking for any ol' car, then its probably not worth it to even own an e30.
87 is a great year since you don't have to etest them year after year.
If you are serious about the car, get the Duss Brothers garage to go over it with a fine tooth comb. That will usually help get the sale price DOWN since they'll find a million tiny things wrong. Don't get them to do the safety though, or they'll insist all those things are fixed first. A normal garage won't even notice them.
If you drive it in the winter, get it Krowned. I went to Ottawa Auto on Catherine near Bronson, they were great.
Buy a Haynes manual, bookmark e30tech.com and r3vlimited.com and ask for a bunch of tools for xmas.
Do you have a link, pics, etc to this sale?