Donanza like Script

Avg Bid (USD)
Project Budget (USD)
$30 - $590

Project Description:
I need a script something like this:

People will be able post projects or individual tasks and call for a quote on each.
It needs to have similar filters like you see on the script above.

Kindly discuss your approach to power such script.

Skills required:
Graphic Design, HTML, MySQL, PHP, Website Design
About the employer:
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