The one thing I would be "suspect" of - the AG Doll Sale dolls.
Every year - The Pleasant Company donates all their catalog returns and everything is sold on as as-is basis. So - I would be somewhat cautious of sellers on ebay from the Madison Wisconsin area.
They somehow "mark" the dolls sold at this sale, but I do not know how.
This sale is a great thing - the proceeds benefit a local children's museum.
But these are the dolls where the eyes may not work properly, or the hair might not be "perfect".
So, yes - these dolls may be authentic AG dolls - but these ones may be seconds.