Price level differences are calculated for different consumption baskets, in particular those of the overseas departments and the metropolitan territory to measure the impact of different consumption patterns between territories.

As far as field observations are concerned, the survey is based as much as possible on the surveys carried out for the CPI and on scanner data, but the reconciliation of products between territories requires additional specific field surveys.

The comparison is made between:

• the overseas departments and the metropolitan territory,

• Corsica and the rest of provincial,

• the Paris region and provincial (except Corsica).

COICOP

Commercial goods and services consumed in the territories of the investigation.

The survey data are based on the observation of a consumption basket. Differences in price levels are calculated by major consumption functions (food, clothing, durable goods, manufactured goods, services) as well as for the overall consumption.

The scope of the spatial comparison survey on consumer price levels between french territories is all market goods and services consumed by households on each pair of compared territories.

The household sector to which the definition refers includes all individuals or groups of individuals irrespective of, in particular, their position in the income distribution and their nationality or residence status.

Prices are recorded on retail outlets.

The survey is isolated. It was carried out in March and April 2022.

Base 100 = 2022