The way it is coded is pretty simple PHP in my opinion--the programmer that coded a complete backend administration area for the website and did some front end code changes for $250, if that gives you an idea of the both the complexity and comfortable budget of the project.
Here is the complete list of changes:
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(Please create an account on the website in order to see the full website)
Need these changes completed within 2-3 days. Please read complete list of changes before bidding.