Depends on the store I suppose. They are in my local drugstore, though it's a long time since I bought razor blades at a supermarket.

"Give 'em the razor; sell 'em the blades"

http://en.wikipedia.org/wiki/Freebie_marketing

Given you're replying to people talking about securing razors and making blades easy to steal, that's not really relevant.

It was late, and I apparently read that backwards.

Fair enough :)