From the article:
This rare 1969 Yenko is one of only 201 vehicles built and its owner hoped it would sell for a cool $300k at auction. This classic muscle scores top points in conductibility and overall condition, but has this owner overpriced the Yenko’s potential value. Watch and find out!

Photos and video - How much is this 1969 Camaro Yenko Worth?

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I'd guess that thing will go for 240k at auction.