I just called my dealer since I could use an extra key. We left the second key at a summer house 4 hours away...

Anyway,

Comfort Access Keys - both parts are $298 + tax + plus programming.
Dealer part prices vary and that doens't include any discounts.

If you don't have comfort access, the fob is cheaper, the metal key part is probably the same and you don't need programming.

The plastic key is $50. No programming.