Ok, xp potions. Are they worth it? let's find out with an example.
An XP potion costs 900,000.This is equal to 300,000 XP.
Your victory over a Titan or Sentinel would have to net you 150,000 XP for you to break even.
In a recent game I came up against the final Thane and thought to myself. '150,000 XP? Naaah, no way would I get that much'. Turns out I gained 152,000. Typical.
But say I had an XP gem equipped, say for example 100%. I could have turned a profit of 462,000 gold.
So yes, xp potions can be worth it.To turn a real profit, buy the xp potions about 50 RB's before you use them.
Hope this helps someone.