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I haven't purchased one yet as i think like you op, another piece of tat to throw to the back of the cupboard. My kids love cakepops but tbh i find them a pita to make so don't make them to often, but they are worth making when you do have the time. Depends on how much you make them whether you should buy it, i think its the latest 'craze' that won't last
Yes, it's absolutely brilliant, I love it. I'm shite at decorating them but the little round balls of cake themselves are mmmm and perfect! I didn't like the idea of mushing crumbled cake in with icing to make the balls as I hate icing so these suit me much better.
Incidentally I use it quite a bit as I find it less stressful to let a group of kids loose with some melted chocolate and sprinkles than traditional cake decorating gear. And they're small enough that if they scoff the lot they don't make themselves sick