Auction analysis software in C# / asp.net and SQL Server

We are searching for an experienced developer to code a web based asp.net Software which downloads auction data ( via HTML text ) of choosen sellers day by day. The software should analyze the average sales prices of auctions, sold unsold auctions, and other key figures. The auction data will be stored on a SQL Server on our Server. The coder can choose the his favoured arhcitecture and look of the software. Our goal is: We need a good software to analyse sellers of the auction website [login to view URL]