Case Testing System

This is a php based system allowing a company to post cases and test people responses according to that. The cases will be like survey but kind of inhouse. It has proper user management system with user activation through email and user rights divided between administrator and user. There will also be screen based rights The survey will produce results which will be evaluated and these results are posted. Results will include simple calculations of question based average, median, mean and highest / lowest. The system will need to take care of security of respondent so will include secure server based technology. Finally a system to order or requistion for survey and small - 1 page ecommerce implementation. Please while mentioning do not send generic messages. Please note project is confidential. Please do mention similar experiences. Bids over $500 are not acceptable. Looking for quality work at decent price. Regards Umesh Sethi