If you're on the fence about buying a used car before the end of the year, some new information may change your mind. Kelley Blue Book's website kbb.com reports that used car prices are going to rise in early 2012 and could increase as much as 6 percent.

Not only will prices likely be on the way up after the new year but they are also at their lowest point in quite some time. Analysts say that used car prices have been falling steadily since June and are expected to continue on that trend through December. Add that to the fact that sales tend to decline during the fourth quarter anyway, and the next few weeks are shaping up nicely for those in the market for a new ride.

"Used-car values typically decline through the fourth quarter due to a seasonal drop in demand that lasts through the holiday season," said Alec Gutierrez, manager of vehicle valuation for Kelley Blue Book. "We believe sales volume also will decline through the remaining fourth quarter, similar to years past, and as a result values will likely remain soft through year-end, with few exceptions."

Along with timing, which car you choose is also important. According to Edmunds.com, some of the best used cars for 2011 are the 2004-2009 Nissan Altima and 2006-2009 Hyundai Azera as well as the 2004-2009 Ford Explorer.

If you're looking to take advantage of the low prices, New Jersey State Auto Auction is the place to go. Regardless of the time of year, the lot has a wide variety of makes and models at affordable prices, and each vehicle is Carfax certified so you know you're getting a reliable product.