Who knows, the price for it in the minter may even go higher if we all get rid of all the essence. 
(No, I don’t really believe that, but it remains to be seen)
Though the update notes did say that the machine was supposed to create a market for unwanted goods, in a way…
Anyway, I personally don’t need so much ancient essence since I don’t make decorative marble or stuff like that. I only need it for the occasional enriched bonding agent mass, though this has been a good incentive to make more of that while I’m processing some fossils and getting more shimmering orbs anyway. 