They are... rare. A few exist in the galaxy, but it is not possible to produce them. If you had enough money, and found someone who owns one, you could but it from them if they wished to sell.
Most usually they have been some kind of prize in an admin-run event.
____________"May the Grace of Ara go with you, and His Vengeance be wrought upon your enemies."
Only fools and children dream of heroes.