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Deal Extreme is a Chinese based website specializing in the sale of very cheap products, some including Rubik's type puzzles. One of these puzzles include the popular "Mefferts Clone" 4x4x4 cube. There isn't a large variety of cubes avaliable. Most of them consist of the cheap, fragile Chinese cubes. The website doesn't have a sub section to puzzles, which makes cubes hard to find. here. To view other Rubik's type puzzles and more, you can search for 'magic iq' in the search bar or click here.