Some of the ACEOs are very, very nice like the Helmar Brewing cards... the printer uses 6-8 layers of paper and then distresses them to make them look like 19th centrury cards. He only sells them as individual cards and only on eBay. Some of the ACEOs are nice cards printed on a printing machine, like the Monarch Corona cards, also sold individually on eBay. Some are cards printed on photo paper via a computer printer, like the Future Stock cards, Porto Rico Cola cards, etc.
Problem is, if TCBD is trying to identify and record all known authentic sports cards, ACEO cards shouldn't be listed as authentic cards; they're nothing more than fantasy cards. In my opinion, we should work to ensure the integrity and validity of the cards listed on TCDB, not contribute toward misleading future collectors by adding ACEO cards.