Honestly it only makes sense to put these things in the cash shop. SE has to find a balance when it comes to these seasonal events target can't simply just recycle old rewards in to every event just so new players can get them cause then old players will bitch that it's just the same stuff again and frankly there are a lot of old players compared to old players. Plus ummm players and still buy the ukatas in gridania for gill. The bomb dance being in the cash shop is a smart move in my opinion.