I have the same problem. Most of my search items are listed by the 7 digit part #. I get all sorts of stuff, a pentax camera, sometimes a complete junkyard component assembly of a pos fwd car.
IMO it's some kind of scam operation because it doesn't have any consistency or pattern. I just delete it and see what they offer up the next day. Of the items I'm looking for one real hit in 6-8wks is good.