Semantics
In contemporary marketing usage, Prof. Bernard Dubois defines "luxury" as a specific (i.e. higher-priced) tier of offering in almost any product or service category. However, despite the substantial body of knowledge accumulated during the past few decades, researchers still have not arrived on a common definition. Many other attempts have been made to define it using the price-quality dimension stating higher priced products in any category count as luxuries. Similarly, researchers have also compared goods in terms of their uniqueness. Prof. Jean-Noel Kapferer takes an experiential approach and defines luxury as items which provide extra pleasure by flattering all senses at once. Several other researchers focus exclusively on dimension and argue that luxury must evoke a sense of belonging to a certain elite group.
Read more about this topic: Luxury Good