My San Diego dealer/friend said most of price difference between US and UK is card related. I got the sense from his comments that M USA are trying to standardize products in the field. Not sure he's on board with that decision because he is VERY M competant. Maybe in US it's a good strategy to standardize, based on the dealer network. Seems like in Europe M have a different strategy.

Roon, Technics SL10 turntable, Meridian 218, Jolida tube DAC, Nuforce STA 200 Amp and passive Swallow Acoustics ALS2 speakers