US consumers snapped up 6.5 million copies of King Kong in its first six days in stores, making it the best-selling Universal Studios release ever. The sales tally amounts to more than $100 (GBP57 million) in revenue, which is in addition to the $550 million (GBP324 million) worldwide box-office earnings. The blockbuster is currently the second-biggest seller so far this year, outdone only by Harry Potter AND THE GOBLET OF FIRE, which sold nearly 9 million DVDs in its first week of release.