Grateful for any advice or pointers. I wish to replace a lost spare key/fob on my ML 270 ( 3 yrs old). Dealer is quoting min £200 and could be as much as £350 if there are issues with the programming.... why? Anyway, assume there must be a non main dealer solution at less cost. Would be grateful if anyone has positive experience of alternatives. This would just be a spare in case original lost.