Ebooks are already selling well on mobile phones in China. At the International Rights Directors Meeting on Tuesday, Gary Tan, owner of the Grayhawk Agency in Taipei, offered a brief overview of China’s mobile ebook market. China has over one billion cell phone users and 300 million smartphone users as of March 2012 and China Mobile, one of two major telecom providers in China, is the country’s largest ebook platform. Publishers may be reluctant to sell foreign rights to China Mobile, as it takes a huge cut of sales — at least 50 percent and sometimes as much as 70 percent — and sells the ebooks at a 90 percent discount from the print price. “These terms sound really bad,” Tan said, but China Mobile has such a large user base that if a book becomes a bestseller on the platform, “we might be talking about six-figure U.S. revenue.”