Must have low requirements and earn 250k+ an hour. Must require low(ish) maintenance so nothing like enchanting onyx bolts where you need 5m for it to run for an hour.
My sudoku script earns ~350k gp/hr and have very low requirements to use:
- 30 thieving (1-5 on men in edge, 5-30 on tea stall) = ~1.5 hours
- Rune Mysteries, The Feud Quests = ~1.5 hours
And it only takes ~150k gp/hr to run. No buying or selling on the GE so no trade limits are limiting you. Awesome goldfarm script.
Very stable and no randoms. I have several vouches also.