managed to get this cube on discount for $15, and at first, I was excited. after doing a solve of it, I'm surprised it wasn't discounted even more. the cube pops frequently, the two flat centers randomly fall out every 30 seconds, and the long layers get locked up constantly. it's nice to add a larger cuboid to the collection, but the playability just isn't there. I can solve a 3x3x9 in about 5 minutes; despite being functionally equal, this puzzle took me more than 30. don't get this puzzle expecting a smooth or enjoyable solve, because you won't get it.