My story takes place in 1980 in West Germany, in the Cologne-Dusseldorf area. My characters (middle-class, in their early 30s) are shopping in a department store or a supermarket. What I'd like to know:
(1) Prices of food, in particular chocolate, milk and ice cream. (I found that chocolate was about 1 DM per 100 gr bar but I couldn't find exact prices for milk and ice cream for those years).
(2) Prices of consumer goods from home electronics and toys sections, in particular: children's musical instruments like the xylophone and stationery like calculators and day planners.
(3) How large a typical department store/supermarket would be in thouse days? From what I've read it was around 1, 500-5,000 square metres.
I've searched in English, German and Russian (my native language) with terms like "price of milk in Germany 1980", "Milchpreis 1980". Fact-checking websites such as www.was-war-wann.de and www.destatis.de (Federal Statistical Office of Germany) as well as some forum commentaries and articles provided some useful information but not everything I needed.
So, I'd be really grateful if German members of the community could clarify these details for me.
Thanks a lot,