If this is your Corvair, please don't take what I'm saying as an insult. Right now, this is what the market for these cars are right now.
If it has a clear title, the engine runs, and there is no rust through any panels, $1,000.
If it has a title, doesn't run, but no rust through any panels, $700 to $800
If it has a title, doesn't run, and has rust, $500
If no title, doesn't run, and has rust, it is basically a $200 parts car.
I'll give you an example of another Corvair I'm seriously thinking of buying. It is a '64 Convertible, the guy had all of the floor pans and rusted panels professionally replaced, and all the paint and body work complete (and the paint looks really nice). He's got an all new interior in boxes, a new top in boxes, all of the wiring harnesses are new, a new gas tank and fuel lines, the brake system has been replaced, box upon box of NOS parts, NOS trim pieces, rechromed bumpers, etc, etc. The guy showed me over $14K in receipts. He lost interest so the car needs the reassembley finished (all the really hard stuff is done). The first time I talked to him a couple of months ago, he said he wanted $2,500 for it. Since I really don't have room for another I said I'd think about it. He called me the other day and said he'd now take $2,000 for it.