For what it is (not original motor, 64, coupe) it looks like a good price.
I would want to see pictures of the windshield surround where it meets the leading edge of the door, the door hinge area, and pictures underneath the car to check the frame. Specifically, I'd want a picture in the rear wheel wells looking forward at the "kick up" area of the frame. That is where midyears like to rust.
I've seen this car on eBay for a while now, but I don't recall if the asking price has been falling or staying the same. Either way, I think anything under $30K for a reliable midyear driver is a good deal.
Good luck and let us know how it works out!