At Sun 'N Fun, I saw TruTrak's soon to be released "ADI" box. My understanding it's basically a Pictorial Pilot with pitch added. In otherwords, dual axis. Price was about $2,700. Since the Pictorial Pilot is about $2,000, you would pay about $700 for the second axis.
The instrument looks just like the Pictorial Pilot, only has the pitch in addition to roll. Replaces or backs up an attitude gyro.