Jack, would like to know if you find anything in your purchases. I've looked at his offerings; all but one of his current listings are various W/Fs offerings,(some bad coils and a lot of heavily cancelled stamps) so it would seem that he has at least some working knowledge of W/Fs. I'm cautious of listing that say "unsearched" and show pictures, like this listing showing only "2-cent" stamps; no "Two Cent" stamps, no coils, no imperf's, no multiples etc. which, to me, indicate they may not be so unsearched. Its certainly possible to find something. I did find a #500 this way once. Large lots like this can sometimes hold something good.
