The 20 best money Web sites
These sites have tools you can trust to help you make better money decisions.

With auto rebates getting rarer and prices starting to rise, you need all the negotiating ammo you can get. It's not hard to find a site that divulges the dealer invoice price for various models. But TrueCar tells you something that's even more helpful: exactly what other buyers in your area recently paid for the model you want. With that info -- gathered from finance companies, insurers, dealers, and other sources -- you can make short work of negotiating. TrueCar VP Jesse Toprak says the average user strikes a deal in 15 minutes or less.
Coolest feature: You'll get a nifty graphic combining the breakdown of the dealer's actual costs, the average price people are paying, and what's considered a great vs. merely a good deal for that model.
Try this too: The True Market Value tool at Edmunds.com offers a slightly different take: Analysts adjust the data to reflect market conditions. It doesn't give as much info as TrueCar does, however.
NEXT: 17. Where can I get a deal on electronics?
Last updated February 19 2010: 12:01 PM ET
Note: We didn't assess sites that deliver primarily news and information, such as WSJ.com or CNNMoney.com.