Here is a thread about the back flip emote. I don’t know if its for every emote. I don’t buy them because of this poor informations about the emotes in the Bazaar. But I had some of them the last chapter without buying them… One of the cool bugs funcom released 
I was able to let my thralls do the sit emotes. The poor guy probably will never dance again because I can not let him sit for free again 