What is a good way to become rich on runescapecom

Members - Flesh crawlers (lvl 35) in 2nd floor of barbarian stronghold, easily make 350k per hour because they drop valuable herbs very often. I think their better than green drags because less crowded, closer to bank, no risk of dying from revs, low lvled so anyone can do it.

Non-member - Cockroach soldiers at the end of the Stronghold of player safety, drop rune scimitars and rune square shields at a decent rate and large amounts of death and law runes, but they are high lvled and can hit fairly high for a non-member monster. Should also try out hill giants in the edgeville dungeon for low lvls ( crowded :( )