What is the total cost to replace battery on 2012 Air in a Apple Store? (US)

Does anyone have experience in the total cost to replace the battery on a mid 2012 13" Air? (before tax, of course) I have heard the battery is $129.00, but not heard whether that includes installation labor, if any.

Apparently the Apple Store for which I have a service appointment next week cannot divulge prices over the phone, and it is a 3 hour round-trip. I would rather be prepared before I go.