Just recently there was a free ecoupon for dollar shave club. For nothing get a razor and extra cartridge. Who wouldn't want that? Of course the idea, I'm sure, is to hook people on buying the extra blades. How the heck do I take the old cartridge off and put on the new one? I have a friend who has wasted I don't know how much money on extras he can't use. Whatever happened to the old resharpenable razors that could last a lifetime?