Advertising network - Complete Project

I'm looking to build an advertising network and was hoping to get a few ideas on price.
It will need to be built from scratch - coding & everything else.

Take a look at sites like:
http://www.addynamix.com
http://www.adshack.com
http://www.miva.com

I'm looking for experienced designers/developers and have the necessary budget to cover costs.

As i mentioned - this is a fact finding mission - but the project will go ahead.

 

Do you need this made? Or fact finding?

 

It would need to be made from scratch.

I am aware of the size of the project - and am just after some "Very" rough estimates.
I'm expecting $xx,xxx & $xxx,xxx quotes

 

Do you need cost per action/lead oriented network or like cost per click network?

 

It will be a mixture of CPC and fixed ad price

 

I would charge roughly $8,000 if I were giving the quote with a reasonable amount up front for hiring designers, flash programmers, etc. But then again, I'm resourceful.