That thing looks sweet. When I was in high school 94ish one of the guys in the neighborhood had a 67 or 66 two door white lowered on wire wheels I always thought it was sweet..... He use to get clowned because it was a Buick and not a Chevy..
I think it is a scam, that isn't Port Angeles WA in the photos, and I have seen it listed before. Here is a pic from when it was listed for sale before, with PA plates on it. Perhaps he bought it and shipped it out to WA, but I am a doubter, especially given his ad that says it is original 12k mile car and is also restored. I messaged him for more info.
old ebay ad template, asking price was $24,500. http://topclassiccarsforsale.com/buick/206089-1967-buick-lesabre-fastback-coupe.html Dealership ad: https://www.connorsmotorcar.com/vehicles/356/1967-buick-lesabre