I've heard of the razor-and-blades business model, and obviously some companies have gone beyond that (see wireless carriers giving away free cellphones). However, leave it to the razor industry to take things to the next level, physical product spam!
This showed up (unsolicited) in my mailbox. I suppose it achieved its purpose, since I was compelled to try it. However, I think I'm sticking with my Mach 3. Nice try.