Champion 100813 9375/7500 Generator! Like New - $680 (Hampton)

Like new Champion generator with 9375 starting watts and 7500 running watts.
It has an electric start, comes with original paperwork.
Father bought it, only ran it once after purchase, decided to go with a different generator that was smaller (a little heavy for my mother to handle on her own if my Father was not around).
Anyway, I recently divorced and could use some extra cash so my father gave it to me to see what I can get out of it.
I did some research on pricing, new these typically sell for well over $900, as mentioned this machine has barely been run, never actually used for its intended purpose, and is clean and in excellent condition.
I am asking $680.
I feel I could get more for it, but I’m looking for a fairly quick sale.
For this condition I think you would be hard pressed to find a better deal.