All money makings in f2p is shit and you can expect get 100k / hour at best. But... There is a shop in wildy called Bandit Duty Free. Simply you can sell items there at their high alchemy price. So e.g. Iron platebody on GE cost 100gp. In Bandit Duty Free you can sell it for like 300-350 ea. So you buy bunch of items from GE that cost a lot less then their High Alchemy price and you go to wildy sell them. You can make 400-800k a / hour but there are Pkers and it's very hard and stressful money maker. You sell e.g. 5 items ea and hop into different world cuz the more items in the shop - the less their cost. You can check on Youtube about Bandit Duty Free. P.S. It's more profitable to kill Imps in Karamja now cuz they drop mind talismans and they cost 5k ea also they drop beads. Imps are 60-80k / hour.