The spot has had more than 700,000 hits on YouTube since CatholicVote.org, a subsidiary of Fidelis, ran it on its Web site, The Washington Times reported Friday.
Brian Burch, president of Fidelis, said NBC originally responded to the group's desire to run the spot with a proposal for a package costing $1.5 million to $1.8 million.
Burch says after his members pledged "significant dollars" for the project, NBC changed its mind.
Called "Imagine Spot 1," the ad opens with an ultrasound of a child in utero set to violin music.
After detailing the child's future as bleak, the voiceover announces the child will grow up to be the first African-American president of the United States as a photo of Obama flashes on the screen.