Mayneris, FlorianToulemonde, EricBald, FabianFabianBald2025-05-142025-05-142025-05-142017https://hdl.handle.net/2078.2/215I analyze separately the impact of quality and productivity on prices, mark-ups and export status of firms under different trade cost and preference specifications. To this end I develop a model where firms are heterogeneous across these two dimensions. Domestic producers of different qualities are of similar size as long as their quality-adjusted prices are identical. Only when initially identical firms start exporting their mark-ups, profits and mark-ups will differ.Quality Productivity Heterogeneous Firmstext::thesis::master thesisthesis:13087