Watching people save money at the grocery store is a hit for TLC, whose new reality show "Extreme Couponing" debuted with an average of 2.3 million viewers in back-to-back episodes Wednesday, reports TheWrap.com.

The series was the top-ranked ad-supported cable program among all key demographics, the story adds.

The show, which first aired as a one-hour special in December, ran Wednesday from 9-10 p.m.