Used Gabriel’s Imperator V value

Hello AZB. Hope everyone’s having a great start of the year.

I know there isn’t a “blue book” for used tables. So how to determine fair market values for used tables, other than how much one’s willing to pay for it?

There’s a 5 year old Gabriel’s Imperator in great shape that I’m curious about it’s value.

I know a new one is about $8k, tournament played one is about $7k-$7500.

I really like Gabriel’s Rafale though. Probably in 10k range.

Thanks