ceramic blades for box cutter knife

I am a stocker in a warehouse. A lot of what I stock goes on rolling racks so I just have to cut the top off the box. I have been using a knife that takes regular Stanley style box cutter blades but I go through one side of the blade every shift. Ceramic blades for Stanley style box cutter knife are available but they are not cheap. Has anyone tried them? I'm not exactly supposed to be using this type of knife, it's not safe, blah blah blah, but as long as I don't make a big deal about it nobody cares. But I have to supply my own blades.