You may find luxury brand reports in the Financial Times, available via FT.com. There is a link to set up an individual Financial Times account within the Brunel subscription on the A-Z list of databases.
Once in FT.com, type luxury goods into the search box and press return (don't select News or Companies). Related Special reports appear at the top of the results page.
You will also find market research databases such as Mintel, Passport and Statista useful for this topic.
You might find it useful to look for case studies in academic and trade journals. Please contact your Academic Liaison Librarian if you need further help.
