Dartin for Divorce

Found this air filter local to me... says to make an offer, but dont know what they go for so don't know what to offer him or if this is even an original air filter... he also has a .40 over 340 block and j heads... I think its a 70 block and heads?

Screenshot_20200801-131532_OfferUp.jpg

Screenshot_20200801-131733_OfferUp.jpg

Screenshot_20200801-131739_OfferUp.jpg