whats a set of used unmodified turbobuick heads go for?

[tb3]

just need a ballpark so I can make a reasonable offer.

 

[TexasT]

The 8445 heads are pretty common. I got a set that had been cleaned up for $50 but have seen them offered for less. I got another set off of a 4.1 core I bought at the recycler. Kind of depends what has been done to them. Hot tank, valve job, magnaflux, new valves/springs? All add cost.

I'd start about $20 and negotiate from there.