How much might a 1973 VW squareback be worth to a hobbyist?

Just looking for a range.

I have one in the driveway. It’s no longer in running condition, but it’s fixable, in my uninformed opinion.

I have a hobbyist neighbor who has expressed interest in it. I can’t afford the distraction of researching it to find out what might be a fair price. I just want to know a rough ballpark so I don’t err by a factor of ten.

Do you have any clue for me, or a pointer to a quick resource that might keep me from making a really stupid mistake?

Thank you.