Or maybe this is about the actual value of CE to crowns.
Sure it'll be a bit unstable, maybe a few hundred CE off at any given time as currency values are never fixed, but at this point in the game's lifespan I think it's fairly safe to think of 100 CE being actually worth and valued at somewhere between 7.5k to 8.5k crowns.
But instead of people selling CE cheaper, buyers who are too impatient to set a price lower than the best one and wait should do that... Seriously, I've played with the spaghetti knights and even they said it was too bloody expensive to buy right now. And people keep complaining about the CE prices, yet, they still keep buying. I honestly don't get it... and I do buy directly the energy sometimes... but only because i need it right now... >.>