Putting "tactical'' In front of the word pen makes a big difference in the price.
Aye, tactical earthenware plant pot used to smash house windows.
Don't get me wrong, I was young and daft once (not right sharp now) and had a massive black "Survival Knife" to prove it.
Proper wally factor nine thing and that tactical I could hardly pull it out of the sheath without everyone around me thinking I was a numpty.
I'm going out on a limb and suggesting that a tactical pen might just be in that bracket.