Are you talking about the Boxmaker that creates cutting templates for actual boxes or the one that gins up a 3D product box image
If the second, I don't think it adds much anymore. People are used to purchasing download-only software so I don't think they need the crutch of seeing a 'box' anymore.
But that's just my take. I have noticed, however, that those faux product boxes seem to have disappeard from most software sites.