[s1artibartfast]

Almost all good have a sliding scale for quality and how much you consume. It's not pretty or Pleasant but it's possible. I don't want to in any way sugar coat it, but it's possible. For example people don't need meat or eggs to have a subsistence diet. The fact that they continue to buy those goods at a higher price demonstrates that they are both willing and capable of paying that price before switching to something cheaper like rice and beans