Not Really a lame reason to be honest mate , the reason why the m2 is more is that it works on a dual voltage and that once in the phone the mem card drops down to a 1.8 and in a card reader the card works at 3.3 , hence whilst in the phone the mem card it helps preserve the battery life and standby time of the handset. it sucks that the cards cost so much mind !
Alex Slane