4x4=12 CD by deadmau5 typically asks about $15 on Music Merch Marketplace (M³), based on live listings from eBay, Discogs, and official stores. Condition, size, and signatures can move a single copy's value.

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Music Merch Marketplace (M³) doesn't have enough live listings over time yet to say whether 4x4=12 CD is going up or down in price.