Hello manolo
Thank you for your message. Migros communicates price increases in the Migros Magazine in the "Price Barometer" section. The "Price Barometer" contains a table showing the product name, the old and new price and the change as a percentage. If you become a Migros Cooperative member, you will receive the Migros magazine every week free of charge. Becoming a cooperative member is also free and is very easy to do online: http: //www.migros.ch/de/ueber-die-migros/genossenschafter/genossenschafter-werden.html.
Best regards
Daniel, Migipedia team