Yes, real interesting.
It also got me thinking about the effect of substitution on the cost of living.
Annual
2009 2010 2011 2012 2013 Inflation
Average 0,82 0,79 1,13 1,00 1,09 7,3%
Cheapest 0,27 0,25 0,38 0,45 0,41 11,0%
Most expensive 2,29 2,16 4,20 1,85 2,17 -1,3%
Looks like in the sandwich world you are better off if you like fancy things, quite the contrary of what I would have thought at first.