founded a leading art-trade company (ArtTrend) in Graz in 1987. Realizing the growing interest for Pop Art he specialised in it and has become an expert in this field. After having founded ArtTrend in Salzburg 1997, he extended the business to Vienna, starting Artmosphere galleries, as of 2003 operating under the additional brand name Rudolf Budja Gallery, in 2002.