I think this is one of the better ways of handling it, but I couldn't see Aeria agreeing to it being Magic Alchemy Clay
Much of her profit comes from this item so it's unlikely. I should have an entrepreneurial mind.
What if the company fixed the item values? The said whose could force players to sell at the price suggested by the publisher.
Ex: Tradable Magic Alchemy Clay - Suggested Price: 500 Gold