untradable yes but investable for small or beginner investors...

untradable yes but investable for small or beginner investors that can only buy $1000 or less of stock at a time, these market participants are important too, most of us started out this way
undeniably cheap with quarterly positive cashflow almost half of market cap and quarterly revenue bigger than market cap
80% discount to NTA as you said and even taking debt into account its still on an inferred PE ratio of 5
but agree may as well be private with the tightness of register