team_negative1 said:

This is what was reported for the SE versions:

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It ultimately cost $15 million to restore all three films. Fox, which owns "Star Wars," put up $10 million to refurbish the film. Lucas, who owns the subsequent films, contributed $5 million to revamp "The Empire Strikes Back," which arrives Feb. 21, and "Return of the Jedi," due out March 7. (Fox will spend in excess of $15 million to launch the re-release.)

http://articles.latimes.com/1997-01-28/entertainment/ca-22867_1_star-wars

Disney would be fortunate to be able to come up with any money near that amount to restore the originals. Although, there are a lot more variables to contend with now, than there were in the past. So taking into account inflation and other variables, it would definitely be higher than that.

Team Negative1

Come on, (I hope) you know they have done something completely different than we want from them !