Alright, so they are duped and yet players can have them and trade them in the game (just not through vendors...) and are not at risk of being deleted, if I understand it correctly.....
How much cheaper are they as compared to the vendorable ones ?
Like, if you are willing to sell 6 vendorable slithers at 500 millions which means a little over 80 millions each, how much cheaper would a non vendorable slither be worth ??