Why is the Legacy Titanus Impossible to find??????

Been trying to find a Legacy Titanus for about a year now and haven’t seen a single one for sale anywhere. I can still find a bunch of other legacy Zords but Titanus it just non existent aside from the black and gold version. Heck the SOC one I can still find being sold.

Was there so little copies made or did I just came into the market too late?