The numbers look good to me according to this link:
Weekend Box Office Results for February 23–25, 2007
Amazing Grace was the number 10 movie last weekend, it's first weekend in release. But it was only released in 791 theaters, which is more than one thousand theaters less than all of the films in the top nine (except for Breach). But when you look at the Average $ per screen, Amazing Grace is over $5000 per screen which is second only to the top 2 films of the weekend. It's more than twice as much as The Astronaut Farmer.
Nice work Bristol Bay.
Amazing Grace is worth your time. My review is here.