It will cost around $300 just for the glass. I do not recommend replacing it yourself as door glass can be very difficult. Go to a PPG or Pilkington dealer and get a quote. Of course if you want just regular tempered glass it is cheaper, if you still want the laminated glass that comes on the WK's make sure you ask for it.
It should be around $350-400 MAX installed. Here is the cash price listing for the WK2's. Just to let you know Geico only pays $170 to the installer for the same part and labor....so the remaining $330 of your $500 deductible is pocketed by Geico.