Companies, like Safeway, that self insure pay $3,000 to $5,000 per procedure. For example:

Colonoscopy: $897 Breast excision of lesion procedure: $2,569 Gall bladder procedure: $4,212 Cardiac Catheterization (no angioplasty or stints): $4,900 Knee Arthroscopy: $3,039

I wrote about it here:

http://www.quora.com/Medicine-and-Healthcare/What-are-some-o...

The CEO of SafeWay, started a company that sells this data. Unfortunately its typically only sold to companies that self insure and have ~10,000 employees. You can watch him talk about the data and the company here:

http://coe.berkeley.edu/static/streaming/gtl-conference/2009...