The thesis "Papers in auction theory" explores how auctions impact consumer markets and economic phenomena. It discusses the importance of auction theory in economics and presents six papers with real-life applications. These papers cover topics such as market structures, financial externalities in auctions, exposure problems, political lobbying, and optimal mechanisms for bidders. Key findings include how auction outcomes shape consumer markets, the impact of losing bidders on auctions, and the role of political lobbying in maximizing social welfare. The research provides insights into how auctions and economic activities are interconnected and influence each other.