Well. I can't really auto as im on a last chance appeal...
And i like to AFK alot soo... Bandits seems to be the best idea...
93 defence took me like 2-3weeks from 70.
3,960,000 GP ... using Bob - the Axe merchant in Lumbridge, Tindel - the Tindel merchant at Port Khazard, Dunstan - the Smithy in Burthorpe, or the Squire - in the workshop area of the Void Knight's Outpost.
3,940,200 GP using a player owned workshop.
1,970,100 GP at 99 smithing (wearing skillcape) in a player owned workshop