Yeah I wouldn't pay $850 for it either. Highest I’d go would be $725. Although I’m not big on Hungarian AKs so there is that.
Original barreled kit though so...there is that.
I concur. You could say 'here is an original barrel build on a US receiver' (which could look very, very good as far as markings) OR 'here is an SA85 with a CHF barrel AND Hungarian receiver, debanned with correct Hungarian parts' (but with the extra receiver markings). I couldn't say which would be 'better'.