I would like a PHP script with ALOT of features

Hello I need a somewhat complicated PHP script made. This site would pretty much have all of the following: 1.)Domain selling like on Afternic and Sedo 2.)Selling websites with a description and screenshot of their website 3.)Selling adspace on their websites like on [login to view URL] 4.)Freelance web designer part 5.)Script listings like on [login to view URL] 6.)A link exchange like on [login to view URL] 7.)Escrow service like on [login to view URL] I would want this all combined as one script. Please let me know what you can do. Thanks.