I have posted this job on odesk , and elance but i am not too keen on the applications.
So would like an experienced coder from codecanyon to look over this and offer me a good guide price.
The basic idea
customers get an email (Newsletter sent from mail chimp )
informs them about a special signup offer
They view a special created HTML page with a signup from (editable via admin Simple WYSIWYG )
once users sign up there info is added to mail chimp and they are sent a voucher code
there are a few more bits and bobs , please check out mock up images