To argue that every possible choice to both produce and conserve toilet paper is incentivized at $1.68 is an extraordinary claim. Almost all supply and demand

To argue that every possible choice to both produce and conserve toilet paper is incentivized at $1.68 is an extraordinary claim. Almost all supply and demand curves don't have cliffs. And without extraordinary knowledge of toilet paper manufacturing and consumption how would you know this cliff exists at $1.68 per roll.