When looking for very cheap used cars, the best place to look would probably be a dealer. The dealer probably bought the bargain at one of the repossessed car auctions. Although you might get a good deal from a private seller, it is unlikely that they will be selling a good, nearly new car at a cheap price. This could well happen if a dealer has been to auctions of repossessed vehicles. Obviously, the condition of the car will come into question. Remember that this car won’t have any kind of guarantee from a private seller, but the dealer might offer you a small guarantee over a short time frame.
For more info, see How To Find A Used Car For Under $1000