73 duster what's it worth

Sorry no pics but I'll describe it best I can. Needs front floor pans,windshield
All interior,drivers side lower quarter patch,lower radiator support,inner fenders
Have been cut for fender well headers,no motor or trans,someone installed a
Sunroof in it,needs some trim,taillights are junk, fenders are pretty solid
Has disc brakes and sway bar and rallye wheels with no trim. Was a slant 6
Auto has a clear title,wheel lips have been rolled. I looked at it yesterday
Guy wants 700.00 for it I'm thinking 500.00 what do you guys think

It has been butchered like many former drag cars. You could buy it and sell the parts, junk the car...

If you don't know the value of the parts then you will most likely be in over your head. Do your home work and learn what parts has been selling for. There is a search engine on this site that might help you to learn what the real world value is.