In today’s market, yes, a discount of 10% is a good deal. But regardless of how “good” that first deal sounds, you should always negotiate the transaction price. You can use the Kelley Blue Book or Autotrader website to see how the dealer’s initial asking price compares to the market. The quality of the deal also depends on the kind of car you’re buying. Ten percent off a vehicle that’s in popular demand is relatively more valuable than 10% off an older vehicle.