Certified Preowned vs. New

I'm in the market for a new car for the first time in 10 years, and one of the things that's changed is the introduction of the CPO programs. Scanning
Cars.com, however, and looking through some dealer lots, USED cars with 30,000 miles don't seem to cost significantly less than the dealier invoice on NEW cars.
What is up with this? Is the CPO price simply more negotiable? If so, what's the equilvaent of the dealer invoice for a CPO price?
Thanks!
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That's the Honda value.
Japanese cars, you buy new. American cars, you buy 2 years old. THAT'S how to get the most value for your dollar.
CPO is just $300 or $600 or something added to the price; it's simply an American Honda warranty that you buy. There's no mystery to it. Normally available only on new cars, it's also available on select used cars that meet certain criteria.
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