Football autographs from showgoers on ebay legit?

Hey all,
Just wondering if anybody has bought anything off ebay that comes with a showgoers loa? Does anyone know if they are legit or should I stay away? They have some things on ebay that I would like to purchase, but I can't find anything on them.
Thanks in advance for any help.
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Comments
Doug
Liquidating my collection for the 3rd and final time. Time for others to enjoy what I have enjoyed over the last several decades. Money could be put to better use.
Yeah that's the one. That was all I could find when doing a search on google.