content: Actually, I've heard some word that pallets of finished product at inkjet cartridge factories do have armed guards at times.  Mind you, that was from a guy who was a complete douchenozzle, so I can not attest to the veracity of that statement. What I can attest to, is that that image that you'll see sometimes that compares the cost of ink to various other liquids like human blood is GROSSLY outdated.  Ink costs MUCH more now.  I think that has HP 45's at something like 73 cents per milliliter.  Those are old tech.  HP 61 black cartridges sit at ~$2.75 per milliliter. A 55 gallon drum of HP black ink has a retail value of around a half million dollars. Edit: Oh, and it also has MOTHER FUCKING SUPERGLUE IN IT if used for the HP 21, 27, 56, and 54.