bidding website script

im looking for someone who has built or have a ready made bidding website, the website has to be customized for my needs , looks and feelings and ability for mobile what im looking for is user can place his needs and business or service owners will bid for what he posted when the user choose the business owner we get % of the work fees set by the admin of the site the website has to be social ready and connected , demo for both admin and users side should be shown. please note im not looking for a built from scratch site, it has to be a working script. bids over 160 will be ignored bidding here means that you read and accepted the above