Posted By:
hankronI think if you have a reputable person say they look good and you offer a guarantee, that is fine.
Everyone makes makes mistakes. If you honestly beleive an item is legitimate and allow for return/refund if there is an error, there's no big problem.
As Jay mentioned, if we know what types of cards you have and perhaps had some images, we could offer helpful opinions. If you have a pile of low grade 1962 Topps commons, it would seem unlikely they are reprints.