I have this same bike, same color, slightly more mileage. $3k USD is more than fair. For less than another $1000, you could have new injectors, battery, tires, fluid/filters, etc. And that's if it even needs those items. Get it! Throw some soap on it, a little wax and you'll be riding with a grin for a long, long time!
Plus, they are a motivated seller, make an offer.