http://cooperhawk.com/

I obviously have a vested interested, but at the least she'd be able to answer your questions on pricing and process. Her contact information is at the bottom of the linked page.

If you don't mind my idle curiousity, how much does it cost to produce a map of such high quality?

You can buy the book on Amazon, or glance at an out of date summary of some of the numbers here: http://news.deviantart.com/article/120160/

But as a very rough ballpark, ignoring size of printing, resolution of detail, research required, assignment of rights, and whether the illustrations selected for the website are representative, my over-the-shoulder impression is that a 3D map of the quality you see in a good travel magazine tends to cost about $1000-$2500.

http://datarealization.com/

http://fathom.info/

Can you give more details about the project and the data set?

His homepage: http://ejfox.com/

Contact info is at the bottom of the page.

I hope this helps. :-)

No idea whether he does small contract work or whether it is affordably priced, but I like his work.

Let me know if you want an intro...