Just some Minor Changes
This is guide is gonna be a plain and simple way to get 99 herblore
The costs should be between 100-200m
From 1-60 just mix the vial of water with marrentill without making any potions, seems slow but thats what ive found to be the fastest way to 60 for me.
Next once you reach 60 you can make weapon poison by mixing a vial of water with kwuarm and then adding blue dragon scale dust Do this untill you have 75 herblore.
The next part is making Extremes, the best xp is here and makes the rest of the xp from 75-99 faster.
The first Extreme Attack potion is made by mixing irit and an enchanted vial until level 82.
At 82 the second Extreme, Strength, can be made by mixing kwuarm with an enchanted vial, this is done untill level 86 when the third and final Extreme can made.
At 86 mix cadantine and an enchanted vial to make Extreme Defence potion until level 99.
Although you can chose to make special restore potions (Energy potion (5) in game) to 99 instead but this is more expensive as each pot requires
an Avantoe and Enchanted vial.
Once you are 99 you can make a 4th and most powerful pot, the Overload that gives a lot of experience with ranarr and an enchanted vial, if you want to get 200m xp or something though it is VERY expensive at 10.1m per pot.
Vial of water 167 gp
Marrentill 374 gp
Blue Dragon Scale Dust 744 gp
Enchanted Vial 100k
Sorry for the lack of colors and pictures im not good with forums :S