Jan -- Feedback doesn't mean squat for Ebay Iris sellers. Feedback is given at the point of sale -- prompt shipping being the basis of most good feedback, and healthy appearing rhizomes. It takes a year or two for the proof that you did business with an honest Ebayer -- when the Iris blooms. I got taken for sixty or seventy dollars on an Ebay Iris purchase several years ago. When the rhizomes finally bloomed, two years after purchase, they were all common ditch Iris -- she advertised named varieties. And she had as fine a Feedback record as you could possibly have. And FWIW -- Ebay won't do a thing about this type of scamming -- they don't keep records for longer than 90 days (I think that's the right time-frame) -- WAYYYY less than the two years required to verify an honest sale. The only Ebayers that I will do business with now for Irises, are the ones that have a legitimate website as well.
The same risk applies to daylilies, or any other plant that takes time to settle in and bloom.