Loy, Jens-PeterRen, YanjunGandorfer, MarkusHoffmann, ChristaEl Benni, NadjaCockburn, MarianneAnken, ThomasFloto, Helga2022-02-242022-02-242022978-3-88579-711-1https://dl.gi.de/handle/20.500.12116/38392In this paper, we develop a theory of food retail promotional strategy. We test the theory using online food retail prices. A python code is applied to retrieve information from the web page mytime.de. Mytime.de is an online grocery outlet that belongs to the Bünting Group, a food retailer in North-West Germany. The promotional sales on mytime.de show a complementary relationship between breadth and depth of sales, indicating that in order to attract consumers, stores raise both the number (breadth) and the depth of price promotions.ene-food retailingpromotional salesGermanyText/Conference Paper1617-5468