SEATTLE–(BUSINESS WIRE)–doxo, the innovative web and mobile bill pay service, today announced the launch of the Cost of Bills Index™ (COBI). The COBI is based on doxo’s nationwide bill payment statistics for the ten most common household bill categories, and provides a standard comparison index for the most fundamental expenses that comprise the cost of living. Leveraging doxo’s unique, aggregate, anonymized bill pay data, the COBI is a new feature of doxoINSIGHTS, which provides a comprehens