Even good sites may have certain tools that aren't so hot. Some sites may make you poorer. And sometimes the problem is you.
Don't: Get price quotes on a car through Edmunds.com.
This site is great for car reviews, but try to get a quote and you'll be pelted with dozens of e-mails from car dealers for months -- and almost none of them will include a price.
Instead: Ask a local dealer for a quote, then call around to see if any other dealers can beat it.
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