Before sending in my lens to be worked on I searched this forum for info on possible prices and fixes. I found some things in different threads that were helpful but I had to go through a lot of different threads to get a ball park idea of cost. Having now received the lens back from Canon Service Center I thought it might be helpful to others to share this information. If others want to add their experiences it could provide a helpful link for people looking for this kind of information. Here is mine.
Lens: 70-200 L IS
Date Code: UW
Service Center: New Jersey
Date Sent: 11/14/09
Date Returned: 11/19/09
Total Cost (including return shipping): $177.26
Reason Sent:
Lens not being recognized by body and IS searching or grinding when trying to lock on to focus.
Service Details:
"We have examined the product according to your request and, it was found that the contact of the part was faulty the unit did not function properly. The EMD/IS lens ass'y was replaced and product functions were confirmed. Checked all, adjusted center/tilt/focus & cleaned all factory specs."

