When this first showed up on Ebay there were about 75 or m0re trays of points, blades, shell, and other artifacts along with the pottery. It was stated that it was all personally found, yet in the center of each try of common points was a huge Grey Ghost that was obviously a reproduction. When somebody called them out on it the auction suddenly disappeared and then came back a little later with just the pottery.
I wouldn't trust it myself without actually picking up and looking at each and every individual pot to make sure they are legit and even then I'd be a little skeptical.