What's a Porsche 911 GT3 Actually Worth? Why Traditional Valuations Get It Wrong

If you've ever tried to get a value on a Porsche 911 GT3 from Kelley Blue Book or Edmunds, you probably laughed at the number. Or cried. Either way, you knew it was wrong. I work at a dealership. I appraise cars every day. And I built SpecScan specif...