I was reading that Mr Gillettes original offering was a razor and twelve blades for $5.00. Now, that was about 1/3 of an average working man's wage, back in the day. To justify this expense, the shtick was that there would be no more cost for two years as each side of each blade was good for 20-30 shaves! My question: has anyone put this to the test? I'd have a go but I don't think that any of my original blades are of good enough quality; they all show some corrosion to varying degrees.