I know this is a very recurrent discussion in SK, that sellers have rights and wrongs, so it goes for buyers, but considering the course of energy price lately I'll definitely only rely on mist energy, and I invite not-addicted players to do so. Glad to have fitted an energy-related thread in 3 lines (no longer the case, unfortunately!). Good game!
(Edit!) Just above as its said: your mist energy is free, daily refilling and guaranteeing a good hour of game a day, which is already fair! There's no need to rush on improving your gear when it implies spending most of your time paying back the CE you've just spent to enable you to run dungeons. Hopefully if many players start doing this, coordinately, prices could drop slightly, and sellers could realize they have to understand us, buyers. And no harm intended to CE sellers; just trying to make concerned players realize they got the right to negociate what happens in the market.
I say, throw rotten eggs at them whenever you see them!