I've seen a few of these stories lately. Darth Vader (David Prowse), and now Carrie Fisher are complaining about unfavorable contract terms. The fact of the matter is that at the time those contracts were signed, nobody thought the movies would be as successful as they were. James Earl Jones even requested not to be credited for playing the voice of Darth Vader because he thought the movie would ruin his reputation. These were young, relatively unknown actors, and if the movies had turned out to be box office duds, they wouldn't be complaining that they weren't seeing any money.