I don't know the seller, and they may have not been the person to put the cover on this one of Fantastic 3 (in fact my assumption is someone else did, sold it as original and the new owner is unfortunately trying to recoup losses after submitting it and getting the bad news)
Why else if you were putting a repro cover on would someone choose a worn repro image, and distress it?
http://www.ebay.com/itm/1939-FOX-FEATURES-FANTASTIC-COMICS-3-CLASSIC-LOU-FINE-ROBOT-COVER-CGC-0-5-OW-W-/162626154791?hash=item25dd463127:g:fnsAAOSw7cVZjKoP