Well, I too have purchased many Iris rhizomes off of Ebay .... There was only one time that a rhizome ended up not being what it was supposed to be (Wabash). I was very disappointed in that. So this year I made darn sure I purchased enough 'Wabash' from a reputable vendor to insure that next Spring I would be delighted. But I also
received rhizomes that were such total trash that I had to contact the vendor and demand my money back.
So, now I don't use Ebay anylonger for buying iris rhizomes.