Question about Half Top

Hey guys. I found an elusive half top for a pre 76 cj5 that is within driving distance to me for sale. It only comes with only the top. He doesn't have the doors. Guy is asking $300 and the top needs to be stander and painted and maybe a little bit of work. What is just the top worth? I'm just super excited I found one within an hour. I was thinking I would have to travel several hundred miles.
Are the doors for the half tops hard to find?
Would all metal doors for a pre 76 cj5 fit?
I currently have a best top on my 73 cj5 and was wondering if those doors would fit?

Thanks!!