ROM on TAS - anyone know anything about the CMA rom ?

[Han]

This is only slightly related to the original topic but I have always wondered what the point of selling (or buying) a ROM module without any accompanying manuals. Most of these tend to be from an era where digital documentation probably existed but not like what we have now (ebooks, etc) such that a quick google search would turn up the manuals. So... are they mostly just being passed around from collector to collector? Or do people actually buy these for actual work (in addition to nostalgia and all that other feel-good stuff :-)