What happen to Sandys Dark CrystalsFollow

I Finnaly got some free time for farming Dark Crystals 4 hrs for 2 stacks worst farming i ever did. I go back to Sandy and i though well worth the 4 hrs i guess 6k a stack amd this sleepsroom stack around 2k 14k for 4 hrs not bad at all. I get to the Ah and the Price droped to 2.2k I fell outta my seat. It Sucked when that happen, lets all raise the price back to 6k again because with the luck i have i'll go farm again and it will drop to 1k lol. Why would someone who was selling them drop the price down so much, they should have kept it at the 6k.

6K is a major ripoff. The highest I've seen it go is 3K - That's 250 each. There's no freaking way I'm paying 6K for a stack of dark crystals...Not even if I'm in Jeuno and the only way I can get juice is to buy grapes...