1985 Oldsmobile Cutlass Salon

Hello, I am in the process of buying a '85 Cutlass Salon in mint condition with low mileage, winter stored and original parts on it. The asking price is $5000 and I assume this is a decent price for the car, but not being real knowledgeable about the car market I wanted to know roughly how much a car such as this should/could run?

I'm using it as my secondary car, for summer and spring type thing. I was thinking about possibly fixing it up a little more and MAYBE re-selling it. Could anyone please help me out and tell me if that sounds worth doing and if I could turn back profit on it. I would greatly appreciate it!

Thank you.

  homegrown