I am a passionate crafter and decorator who likes to craft the furniture with which to decorate my homes. I also have little money (a sickness common for all decorators) so I have mostly revert to farming the furniture plans myself.
I usually go into the zone of which I wish to have the plans from and go to a good farming location. My routine is: I loot until white plans drop and I switch character. Usually this occurs after first a green plan drop, then a blue plan drop, then whites drop. But no purple. It is really really rare ultra rare that a purple plan drops this way. Is there a way to improve the drop rate of purples?