| It seems that some decisions about things like this are made at the local level. Sometimes you win, sometimes you lose. U.S. buyers will pay twice as much for LSD than in the U.K. - maybe the Brits only get one key. I'm betting it all averages out in the end. I paid nothing for my Anthracite headliner - now it costs $200. That pays for a key if I need one.
As for the charging of the key, I have closely inspected my 2005 key, and I can not see how the circuit to charge it is made. I can not detect any insulation layer or discontinuity that would allow the key to have a positive and negative current sent to it. The 2005 manual says that the key has an extended life rechargeable battery, but I do not see the path to the charging current. It must be like my rechargeable toothbrush, where there is just a little plastic covered peg that stands up from the base that fits in the bottom of the brush. No visible metal contacts - must be done with magnetic flux variation or something. | 
