I wanted that trio myself, you were fast! I had a trio from ladd, now have a pair for a couple of years. I will agree that the all look like my male, especially the top and bottom ones, but I doubt you have any problems. Mine have never displayed any aggression towards each other, they are actually some what timid... Very hardy. Eat anything. Love mine and would love to have a few more females.
I completely understand the QT comments but - For what it's worth, to you... I have bought fish from LADD that have had flukes, I have had two show up with Ich and I have had multiple angels that didn't eat. They are better then most LFS but far from perfect.