Autotrader.com is a decent national search for dealer listings. Source: 11 months ago

Cars.com, autotrader.com, truecar.com, craigslist, etc. Search nationwide. Be willing to fly and drive or have the car shipped. Source: 11 months ago

I look at autotrader.com or something with a wide milage range, and they do seem to climb quite a bit outside of my living zone. Source: 12 months ago

I saw the same car on either autotrader.com or cars.com and I wondered the same thing. Source: 12 months ago

In addition to the fees, often their advertised price includes a trade-in allowance. It makes it almost impossible to compare prices on a site like cars.com or autotrader.com because the actual price can vary by thousands of dollars. Source: 12 months ago

What about something like Pretix. I personally haven't tried it. Source: almost 2 years ago

You may want to try pretix: https://pretix.eu/about/en/, the corresponding GitHub: https://github.com/pretix/pretix . Source: over 2 years ago