World of Warcraft Sells 8.6 Million Units in US

World of Warcraft has netted 8.6 million sales across its various releases, expansion packs and bundles from US retail, according to NPD data provided to Gamasutra.

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The figure includes the base edition of World of Warcraft, the Collector's Edition, its two expansions The Burning Crusade and Wrath of the Lich King, and Battle Chest bundle.

Dabbling in speculation and presuming an average selling price of $30, Gamasutra calculates that the Blizzard MMORPG's retail sales could come to a grand $258 million.