1977 double wide approx. 1400 sq. 2bd. pricing in Chico, CA

I'm interested in buying a mobile in a senior park. The mobile is a 1977 double wide approx. 1400 sq. 2bd. 2 bth. fairly good shape. This person is wanting $87,000 for it. What is a realistic price for this mobile. He can"t get anyone to get finance. I'd like like to offer, but don't know where to start? We'er in Chico. Ca. Thank You