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Is it affordable for mortals or is this a business only offering?

Certainly expensive. ~300 eur/usd with mic (and you need a proper audio interface to support the mic).

A bit sad, because it might do most for less expensive speakers and untreated rooms.

It's cheap compared to a Trinnov system. But honestly you might be better off spending 300eur/usd on wood, Rockwool and some fabric.