Yep Sorry man, I'm with everyone else on this one your spot on the tail is about twice the size of a festae. You have yourself some uros, if you want to be sure you you get the real festae check out jeff rapps site at tangledupincichlids.com. I did your method and found some real festae at a common pet shop, just miss shipped form tfd. 4.99 for a real festae..what a steal ehh? lol
Just keep checking If you are in a well developed area you will run into some eventually. I personlly would take them back and said they weren't what I was looking for and were misslabled. They should take them back or at least give you credit.
My mislabled festae is my av check it out. Hope you find one they are the best SA in my opinion.