How to solo-hunt demons as a Level 220+ Royal Paladin and make a profit?
It's really simple. You can go to Yalahar respawn. I usually hunt on the east resppawn, but west is good too.
I take 800 SMP's and 2000 Crystalline arrows, and with those supplies i can kill 80 - 90 demon and get a pretty decent profit (100k+).
In this video you can learn how to hunt there (pt-br)