What is "ka-ching!"

"Ka-Ching!" is a 2003 song by Canadian singer Shania Twain. It was the second international single released from her 2002 album Up!. The song was written by Robert John "Mutt" Lange and Shania Twain. "Ka-Ching!" was the second release to Europe and Central American markets following " I'm Gonna Getcha Good!". "Ka-Ching!" has become one of Twain's most successful singles in Europe to date. The song deals with consumer culture in the United States through the boom years of the 1990s and early 2000s. The line "all we ever want is more" is the general theme of the song.