The December 30/January 6 issue of Bungei Shunju 's Weekly Bunshun magazine calculated that One Piece manga creator Eiichiro Oda 's annual income is 2 billion yen (about US$24 million). The magazine took the number of One Piece manga volumes sold this year (32,343,809), multiplied that by the average cover price (400 yen), and multipled the result by Oda's estimated royalty percentage (10%) to get the tally of 1.29 billion yen (US$15.5 million).

Weekly Bunshun then estimated that Oda earned 749 million yen (US$8.97 million) in royalties for character goods to reach the final total of 2 billion yen.

Source: Yucasee Media