 By the end of the 1980s, Mercado had authored seven books, of which one, "Más allá del horizonte" ("Beyond the Horizon"), was published in three languages (Spanish, English and Portuguese).From the mid 1990s until 2010, Mercado's show aired in the Univision network throughout the Americas, but on 8 January 2010, after a fifteen-year relationship, he announced that he and Univision had parted ways.He was managed by entrepreneur Bill Bakula.