It’s too much for a one web site. But some people can charge you from $2000-$5000(especially on elance.com)
If you are interested, email me at: [email protected]
we can work out something together 
Here is some examples:
http://www.p4k.netfirms.com/examples/examples.html
Some banners:
http://www.p4k.netfirms.com/img/banners.html
Regards,
Slava