at least 15,000. It's got incredibly low mileage which helps give you good price. But it's only a 2W, which a 4W might make it more desirable. Not sure, 2W Ravs might be more wanted.
Your car is almost still new. Only 2 yrs old, with average mileage driven. Check car wantads, and watch what other people are selling theirs for, and then you can get an idea what to ask for. Also check used car lots, to see what they are asking. Another good way to get experience to see waht the market is selling.