in the uk we measure the price of a basket of goods, which includes quantity adjustment. So packaging size is irrelevant. https://www.ons.gov.uk/economy/inflati

in the uk we measure the price of a basket of goods, which includes quantity adjustment. So packaging size is irrelevant. https://www.ons.gov.uk/economy/inflationandpriceindices/methodologies/consumerpricesindicestechnicalmanual2019#weights https://www.ons.gov.uk/economy/inflationandpriceindices/meth... >The simplest form of direct adjustment is quantity adjustment, which is used when there is a permanent size change in an item.