Remember people who are willing to buy a 10 year old car with 200K+ miles is a very, very, very limited pool. Worth low balling. I'd say around $7K and I still think that's too much!
People who don't know 4Runners, or Toyota in general, won't appreciate the value and think it's overpriced. I think a 2UZ-FE equipped Limited 4runner with over 200,000 miles is fair at around $8K or so.