I don't feel like the cost for these is in a good place. My feeling is that when they decided last minute not to require the T1 weapons they didn't do a very good analysis on the impact of the cost of the replacement component. Previous weapon set achievements from LW episodes cost at most about 200 gold, sometimes considerably less. This is a reasonable stretch goal for most players. Charged Stormcaller set is still sitting at nearly 1200 gold months after the release. If I wanted to blow 1000g on an achievement I'd buy that "I'm Rich You Know" title!
I don't think there's a solution at this point that would make all players happy (any change that reduces the crafting reqs or makes the components cheaper would be met by ire from players who have already sunk the gold in), but what do you guys think about the situation? Is this where you would like future weapon set achievements to land (very expensive to acquire and thus more rare), or do you think they messed up and would like them to be more widely obtainable? Is the reward for the achievement (16 jazzed up skins we already have, 50 AP, 3 lodestones, a title, and a Gift of Lightning) good enough to justify the expense? Should they do something with the next release to put downward pressure on the price (e.g. boss that can drop Stormcaller Cores)?