Personally I've never spent a cent on this game, for that matter any game I've ever played.
By seeing a package/event, it will give me and many others some sort of guidance (indirect response) that shows the game is still in development (sort of).
If uCool can't be bothered to talk to us and look at our wonderful feedback to improve their games then perhaps it might be slightly encouraging by getting a response out of them even if indirect.