IncGamers has a press release from Flagship Studios declaring that "Hellgate is the Most Successful Online Korean Launch in 3 Years." This seems to refer to beta testing, rather than sales, as they go on to call this: "the most successful online video game launch in Korea of the past three years with over 1 million accounts registered within the first two weeks of its open beta test." Flagship feels this comes from their listening to player feedback, and has them looking forward to "expanding the Hellgate universe." Here's that bit:

“To become the most successful launch in Korea for over three years is an incredible achievement,” said Bill Roper, CEO of Flagship Studios. “This milestone wouldn’t have been possible for us to achieve without the incredible support of our publishing partner, Hanbitsoft, and our dedicated community in Korea. We look forward to expanding the Hellgate universe and building upon this success in the future.”

“Flagship Studios are well aware of how the Asian market operates very differently to the Western territories” said Alex Kim, CEO of HanbitSoft, “By listening to players’ feedback and through constant updates to the game, Hellgate: London will continue to be an incredible success throughout Asia.”