» Mon Sep 28, 2009 6:52 pm
IIRC any potion you make at a given skill level with the same equipment has the same price, so if you're not making them to use, just make anything you can. As your skill increases (and it will if you make lots of potions) then the price they fetch goes up, so you may level up in the middle of a batch, and the last few will be worth more than the first.
Note that this means that some ingredients you can find are worth more than the potions you can make with them. A general rule of thumb is to sell the ingredient if it's worth more than half your current potion price.
Also a better Mortar and Pestle increases value of potions made, so if you're making potions and selling them at an alchemical merchant's, then buy a better M&P if they have one before making the potions.