Why are they trying to get people to stop using Mach 3? Is it just to get more sales on the new razor or is there some kind of issue with the Mach 3?
(I'd like to see priceonomics write a blog post about the razor blade model)
http://www.theonion.com/articles/fuck-everything-were-doing-...
But they definitely push for whatever is the newest (and usually more expensive) option.