Why is Lenovo charging $250 for a touchscreen

Can someone please explain this to me. For the ThinkPad X1 Carbon its $1250 but for the Thinkpad X1 Carbon Touch its $1500. Really? From what I've read it costs at most $40 for a touchscreen of this size. Id even understand a $100 increase but a $250 increase. For crying out loud for $50 more I could buy an Amazon Fire 8.9 inch tablet. I mean sometimes I feel like OEMs are trying to kill windows 8 and Microsoft.