classifieds website

classifieds website needed for business listing with the following specifications: - both viewer side and admin side must work like the demo on [login to view URL] plus we need banners, one on top header rotating to change banner ads randomly, admin should be able to upload these banners and change the time interval side banner boxes on both sides for sponsers, 2 on each side, admin should be able to upload banners from admin side. events calendar, admin should be able to post events from admin side. please look through the demo website thoroughly and give us your REAL FINAL price, we will not accept raising the price when the work in process and we only pay 10% in advance, sorry but we have bad experience with people don't keep their word.