Typically for me I usually go between three and five shaves. Some blades can definitely be pushed beyond five shaves and some that I have tried didn't work out so good. I'm kind of at the point where I figure I should quit while I'm ahead before the shave quality deteriorates. Right now I've typically been tossing them after three, but I'm also trying to burn through my stash a bit and narrow it down to the blades I like the most. Hopefully.
integritas pietas fortitudinem