Charged Lodestone High Presence in Recipes?
It’s mostly due to “thematic relevance”. A lot of high-end weapons that utilise electricity or light would logically use Charged Lodestones. Can you imagine Dwayna’s Feathers using Piles of Vile Essence, for example?
As a result, the demand for Charged Lodestones is higher than the others, and there isn’t really a reliable source for acquiring them. (Although with the introduction of Champ Bags and Dust Mites, prices for Charged Lodestones have actually fallen from their all-time high.)
It might be worth asking on the Black Lion forum page on one of the stickied questions there. The thread is regularly visited by John Smith, who is in charge of the economy on GW2. I can’t promise he will answer your questions exactly, but he might give some insight behind the reasoning associated with adding both more recipes and more sources for this lodestone.
If I had to guess I would say that the more a material is both called for and provided, the easier it is to guess the price of any new item, as the material’s price will be less volatile. I agree with Zaxares’ point about the number of recipes requiring it (at least initially) being thematic.
(edited by Cormac.3871)