Ampex 456 tape? I wonder if this is 1 inch or 2 inch tape, and how many tracks/stems there are... If there's minimal mixing already, someone could a full analog remix and analog mastering for a vinyl press, without any digital quantization. Now that would be nice!
Honestly, if that was an option $1,000 doesn't seem too bad considering I'm willing to bet they could sell 50 at $20 a pop easily.