Car has been sitting for 10 years

Here is my $0.02. Unless the person selling it can start it and/or prove that it will run, You need to price it as though it will need everything. If a guy says something like, "It was running fine when I stored it. Just top off the fluids and it will start right up," I would doubt it. I always figure that if it was really going to be that easy to get it running, they would do it so as to be selling a running car. Just be careful.