Make it cost 10k ec per horn Aga, with like 10 different notifications that you're buying this item at stupid prices, tis way you put an ACTUAL coin Sink into the game (other than gear)
I mean at this point you may as well throw in random EC sinks so it gives those hoarding billions of EC a reason to spend.
Fashion, Stupid Forges that sell unavailable stuff that's mostly useless but for lots of money