Elvis Presley made more money in his lifetime than any other performer in history. Yet, when he died, his estate was nearly bankrupt. In "Elvis Inc., author Sean O'Neal reveals the abysmal condition the estate was in when Elvis died, and how Elvis Presley Enterprises turned the estate into the huge success it is today, raking in more than $100 million a year.Here is a glimpse of what's revealed in "Elvis Inc.: Why the second floor of Graceland is off-limits to the public Why Elvis never toured outside the United States How much Elvis' relationship with Colonel Tom Parker cost him