Add up the value of the usable parts that you will get in the deal. The ones that you actually need now. Others may need something you can't use. Consider your time involve in pulling and shipping the parts if you decide you might offer parts to others.
The fact that ther's no title may make it tough to get rid of the carcass when its all picked over. Most scrap yards here require a title otherwise, you will have to cut the car up to dispose or it.
Another thing to consider is your local ordinance, neighbors... about having a "junk" vehicle on the property.
You may be better off finding the only parts you need. You can buy a lot of parts for $500.