Decided to make this video to show that even broke hobos can make 2m+ an hour. I wore HAM robes because why the fuck not.
On a more serious note, I did ~4.5 min kills on average meaning that I'd manage around 12 kills an hour. Zulrah is around 125k avg loot/kill in the long run meaning that I'd make ~1.5m/h. As for supplies, 2 kills a trip is 6 teleports an hour = 180k. Supplies worth for every inv is around 50k so that'd be 300k for an hour. 180+300=480k. Pure profit? 1m/h. With Ham robes. And Crystal bow.
Good luck.