Quit yer bloody whinging people. It took less than a day to farm 10K frags; I haven't bothered to buy Red Krampus yet because I'm hoping to pull him from souls while fishing for Dark Advent Lilith. But this is a cool dungeon with a fun storyline, there are some nifty freebies at the beginning, and you can grind - or not - at your leisure. Neither of the characters are "must haves" for Arena or Gauntlet; they're fun little stocking stuffers if you're diligent in grinding. Probabilistically, if you grind out 10K fragments a day, you should get one or both of the characters. And if not, repeat to yourself: it's only a game.