Stone production is not the best way to make money these days lol. For me Elrue[1]s are garbage that I simply dump to NPCs or to players for as low as 15 coppers a piece. Profit doesn't really turn up until you hit tier 2 productions and even by then it's still very low. You might be able to sell Elrue[1]s for 100+c each but most likely it'll take you more than a few days (unless idiots or uber rich players run by and decides 100c is nothing), and even under that condition you could only vendor at most 50 stones without cashshop advantages. I'd create a character making elrues just to dispose of the dusts I collect, but for profit scroll production is imo the best (you can sell 250 tier 2/3 scrolls at the same price of elrue 2s, given the same amount of vendor time scrolls win by far in terms of profits even when you price it lower). P.s. don't count on the FiestaWiki, some informations are valid but a large percentage are outdated.
