What is a fair price for not starting 2012 CFMoto Fashion 250?

[SeanAM]

Hi all.

I have been eyeballing a used scooter for sale. It's a CFMoto Fashion 250. Basically a Chinese copy of a Honda Helix.

Parts seem hard to find, it's been abandoned by the brand,(they no longer make scooters, at least in the USA) and the brand itself seems unstable.

It isn't crashed, has sat for years, owner replaced battery and claims they "cleaned" the carb. (Don't know if that means "sprayed carb cleaner in the throat" or "took apart, soaked and rebuilt").

What is a fair offer? They were asking (and not getting) $1000 USD.

Would $300 be fair, all factors considered?