I was at the Daytona bike week vintage auctions and almost bought a pristine unrestored CB550 in the parking lot. It had 2800 miles with perfect original paint, it was amazing and he only wanted $2500 for it. I agonized for a while thinking I could buy it on Wed and sell it for more in the Friday auction. Seems I remember seeing them go on ebay for $4500 in this condition. Anyway I ended up passing on it. There was another one in the auction in just a tiny bit better condition and it only went for $2200 so I did the right thing.
I'm shocked at the low values, its really not worth restoring one yet.
There was a never ridden 305 scrambler with 3 miles and it went for $13.500 otherwise I though everything went too cheap.