I paid 10k for my 773 Bobcat maybe 10 yrs ago with more hrs and new tires, recent fluids/filters, a bucket and forks.
It's been a great machine. I replaced a hose, a seat, and a battery in 10 yrs. The Kubota 4 banger is a great motor, nearly bombproof.
GL with the project. Sounds like a good deal.