The Broadway musical adaption has made more than $30m (€24m) since it opened in New York in March this year.
As preparations continue to bring the stage show to Dublin next February, then London’s West End, the producers have also revealed plans to roll it out across the US from next summer.
Latest Broadway box office figures show it has been piling on the numbers, with even Hurricane Sandy only putting a dent in its take.
It has grossed €24m, with almost full houses every night at the 8,400-capacity Jacobs Theater in New York.
The show now regularly takes in more than $1m (€780,000) every week, or about four times the original cost of the entire 2006 film.
It was boosted by winning eight Tony awards in June, with sharp increases in both numbers flocking to see the show and ticket prices, which on average cost $120.
The producers announced back in August that they had recouped their original investment in the production in just 21 weeks, the fastest for a Broadway show in a decade.
And the box office figures it has recently being taking in almost as much as the hugely expensive $75m Spider-Man production, which includes songs by Bono and The Edge.
John Carney wrote and directed the original film, which starred Glen Hansard and Marketa Irglova, who also provided the original music. They won an Oscar in 2007.