I have a Becker map pilot that was used in my R172 SLK, fully boxed with instructions and USB lead. It's as new really.
The part number is A166 900 00 01
Open to serious offers, from memory this fits, last gen C Class, current SLK, A and B class.
A few months back there was a documentary on Ryanairs's fuel policy. Management put pressure on the captains to reduce fuel use and what they take on before a flight. They have to justify any fuel over the internal usage guidelines.
This year the number of May Day landings has increased...