Buy grimy herbs, clean the herbs and sell the clean herbs at a higher price. See table below or the herb calculator. This method can work extremely well if you have a lot of money to start (since you will have the ability to move through thousands of herbs per hour). Market fluctuations may wipe out any profit if one waits too long, or increasing it substantially if the prices happen to go up while one is cleaning them. Other difficulties are due to the volume restrictions on the Grand Exchange; orders will probably take much time to complete. Also you can use the clean herbs with a vial of water to make unfinished potions. Many players like to buy these unfinished potions to save time, since making them gives no experience. This may be worth your time to do because usually it provides decent profit.
None
2*****
Level 4 - 85
Making Mixes can make some money, you need a two-dose potion and caviar, use the caviar on the two-dose potion and it turns into a mix and you get a bit of herblore experience. Not all mixes make money, but some do, always check prices before making. Use the mix calculator to check how much you gain per hour.
***Some or all of the ingredients for this potion are not tradable.
Due to constantly changing prices for items on the Grand Exchange, some information in this article may or may not be current. If a money making method is out of date, you can edit this page to improve it.