That is probably as good as you'll get until you actually go to a dealer or two and ask. With the way they are blowing out cars, the used car inventory is piling up pretty good so i wouldn't think a dealer is motivated to give top dollar on a trade in. you just need to get a fair figure in mind and try and get it. browse the autotrader online and see what dealers are asking for your make and model. then factor a couple grand below that.