2000 Dodge Caravan price?

We are going to sell our 2000 dodge caravan. It's not an SE and it has 5 doors. automatic, power windows, power door locks, cruise control, and a lot of many more intresting things. I searched it up on kelly blue book, and our total came out to be about $3,500, but I've seen them on the lot at our local toyota dealer( we are going to trade in for 08 sienna LE AWD) one in particular that looked exactly like ours, and had all the same functions, maybe a few less, and they were selling it for $ 6950. So my question is, why is our car so much cheaper than the one on the lot at the toyota dealer?