The movie has earned a little over $23 MM at the box office although it might be re-released to take advantage of the Oscar. The movie was a nice money maker as it was done on the cheap.
I just looked it up. They say production costs were only $1.5 million. That seems ridiculously low. I wonder how much it really cost to make.
So it was seen by 2.5 million people. Base on average $8.65 per ticket.