I have two types of Xenia, including the sort that you are looking for. I don't have lots of the "pink" sort (which I refer to as
Red Sea Xenia, because that is what it was called when I first bought it), but I could spare some (and it grows very fast, so you could have a nice patch in no time), as well as any number of other things.
I was maybe going to be getting a few of these zooanthids from Epidemic sometime though. Not sure. If not, I'd be very happy to get these from you.
Just curious....do they really look pink in the center like in the photo?