Auto site

I'm building an auto site for users to post their vehicles on it .. to buy, sell, even rent cars/vehicles from my user community. The site will also have tons of information for all users visiting it. Functionality OR what i need : - templates (main page and sub page) - ASP/PHP pages talking to the DB (mySQL) - Database is searchable (Simple, Advanced search), should be able to display the search results in multiple pages, show search result count, etc - Admin Console to monitor and manage the main site - Ability for the users to post their car/vehicle info - User notifications - Users should be able to receive messages from interested parties - Feedbacks section I'M LOOKING FOR BIDS WITH THE FOLLOWING INFORMATION: - HOW MUCH TIME IT WILL TAKE FROM START TO FINISH .. I MIGHT ADD, THIS IS A PRIORITY PROJECT FOR ME .. - AND OF COURSE HOW MUCH IT WILL COST ME ? - I'M NOT INTERESTED IN PAYING FIRST ... I PREFER THE "PAY AS YOU GO" APPROACH ... YOU DELIVER AND I PAY FOR THE SERVICES. YOU CAN LIST YOUR DELIVERABLES AT EACH STAGE ACCOMPANIED BY DUE PAYMENTS. - THE SITE HAS GOT A LOT OF POTENTIAL SO THIS WILL BE EVOLVING FROM A BASIC SITE TO START WITH ... BUT EVENTUALLY TO PROVIDE A HORDE OF SERVICES !!!! WELL THEN, HAPPY BIDDING !!!