Mini Search Engine

Looking to develop Mini Search Engine, where user should be able to search for product within specified categories (around 30 Categories), need to get search result (Product Details, Price and Link Refrence) from another search engine (around 30 nos). Result to be displayed in accending or descending order of Price . Developer need to have knowledge for getting data (Specially Price as it might not be part of Meta Tag or Front Page)from different Search Engine. Detailes can be discussed through PM.