The line "all we ever want is more" is the general theme of the song.
In the UK, it became her sixth consecutive, seventh overall, top ten single.
"Ka-Ching!" hit the top ten in seven countries: Austria, Germany, Hungary, Romania, Switzerland, Portugal (where it reached #1) and the UK.
It became Twain's highest charting single in Germany, Austria, Switzerland and Hungary where it spent 62 weeks in the top 40.
The music video for "Ka-Ching!" was shot in the Casino Español and in a hotel in Mexico City, Mexico, and Madrid, Spain, in January 2003.