Turnkey websites, templates, graphics ...

Hello! I'm to start my own business, proposing turnkey websites (+ maybe configuration/installation & hosting), templates, graphics (such as photos) ... and need to find content providers. Are needed: PHP scripts (other languages are welcome but priority will go to PHP) such as : classifieds, dating, auction, portal, directory, music store ... Templates : for websites, CMS (PHP Nuke, PostNuke ...), OSCommerce ... Graphics : professional photos, logos, banners ... I would prefer a deal based on percentage on sales, that's the reason why I've chosen small project budget range, but everything is negociable. Sincerely.