my grandson loves these marble maze kind of toys. Since he is only 2 I am very careful only using toys that have larger marbles. I have only found 3 marble mazes that are workable. This It's so expensive that I waited quite a long time before purchasing, because almost $40 for this outrageous! It is still ridiculously expensive for a bunch of plastic, but the engineering on this toy makes it worth it. My grandson absolutely loves it
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