There's no way I'd pay more than a couple hundred dollars for such a thing, personally.
RCA connections? No thanks.
Only 15 & 7 1/2 ips? No thanks.
Minor head wear? No thanks, I'd want a lab report instead of an eye-ball guess.
Seems like a semi-pro consumer level format machine of its time.
What about replacement parts in the future?
Even if it were in great shape what's the allure? 2 track to 4 track swappable heads? Even still that doesn't justify the current bid of $810 (again my opinion).
There's more than just "plug in and go" regarding swapping heads, btw.
It's a bold machine during its time but I don't believe it's practical in the long run.
Just an opinion,
-- Adam Lazlo