The tin tops are not in very high demand since you can't let the top down.
Here in FL on CL people ask about $2000 - 3000 for the average beat-to-**** Sami. missing the top, not running, without title. For every 10 Sami's for sale there is about 2 titles for some reason.
Tin tops are basically given away though.
I once bought one that melted a piston in my parking lot for $300. The guy was never able to produce a title, which sucked. I put a $100 engine in it and drove it around a bit, took it on some trails, had some fun. I sold it for $1200 to a guy that was freaking gitty to be buying it. I wish I had looked on CL before I sold it because I could have got $3000 had I known. I knew I screwed up when he didn't even try to haggle with me.