rabbit is right i have seen cars for 9k and another one exactly same spec with higher mileage for 13k. Obviously the 13k seller is a dreamer but it's all relative to how long you will keep the car, and how much you want that particular car. From my experience of searching for the right car at the right price there are alot of buyers for cars 6-8k, so the deals do not look as good. However, get above 9k and there seem to be bargains aplenty, probably based on trade in prices of sub 8 people have received on 07' cars from dealers.
My advice grab another grand out of your savings and buy a minter