custom php programming

Hello, I need a PHP/MySQL programmer urgently to complete a site I have in mind. Our usual programmer has a lot of jobs to do currently, so we have to risk and outsource this project. The job would be custom programming, with javascripts and ajax. The site is basically devoted to sortings of user information. We have design to be integrated. We want you to build a working demo on your server asap, before a half payment would be made. All the details are in PM. Average bid price is $600, everything above would be simply ignored. Bid smartly. I don't want tones of useless urls, just pick a couple of your best & relevant works to date for me, that's enough. Have a nice day, Trevor