When planning to sell or trade your car, it can be difficult to determine exactly how much it's worth. Some websites will quote one price, while others another. And when you finally get to the dealer, rarely is the price in the same ballpark. But is the dealer playing hardball, or are you just getting faulty information?

Used car pricing is a bit tricky because every car is different. Mileage is a good indicator of the general condition of the car, but then there are 100,000 mile cars that run great and 50,000 mile cars with service histories a mile long.

A new website called ClearBook.com is hoping to make things a bit easier, according to the New York Times. Sites like Kelley Blue Book and Edmunds have strong reputations for providing prices, but the folks behind TrueCar argue that their prices are ultimately determined by editorial guidance and estimates.

ClearBook instead combs the web for millions of used car listings and sorts by make, model and mileage. It then averages out the data so that customers can see the full range of prices that the vehicle is selling for.

In the future, the creators told the news source that they hope to incorporate actual transaction data from buyers and sellers in order to give buyers better context for the price ranges that they quote.

Those interested in trading their vehicle may want to consider New Jersey State Auto Auction, which offers great prices on trade-ins and a wide selection of cars for sale.