Since they do not drop lower than 2200 over a prolonged period since rs 3 gold they have an average alch of 2380,, you can purchase at 2200-2250, and sell for 2300-2350. It's not the fastest method out there but it's consistently successful, in the event that you're a member it is possible to buy more exotic products like black chaps for 5400 and selling for more than 6000, but if you do not plan it correctly, it could mean you hold stocks for a period of time.
Avoid red dragonhidesince it does not sell well and you should stay clear of seeds as they are the plague, I've lost a fortune from them. The trick is to visit the 180 day graph and look at what bounces often between two points. make purchases and sales before they reach them, it takes some time and practice, but eventually it's possible to make incredible profits of around 1-2 million everyday...do some slayering or woodcutting at the same time so you're not wasting time either.
Herb running (in definition) is the process of running between all of the herbs in the most time efficent way. It takes some time for one to perfect the right route for running among the ones in the area of the swamp (forget that name) or the one in draynor manor as well as the one in the north of ardyand the one in Catherby as well as (if the quest is completed) the patch in Trollheim.
The goal is to plant (usually) that most lucrative herb seeds that will produce the greatest profit after harvesting. I'm not entirely sure about the best level to start or even the current price. But I'd probably advise you to do it at your level until you unlock additional herb options.
Participating in Fairytale part 1 is a huge benefit due to the secateurs that increase the quantity of herbs collected. A good option for those looking to run some herb runs in the future is to invest in the Herb Scroll by Dungeoneering since fire cape buy osrs it could provide some possible "money back" should you be lucky.