there are three ways to kill a werewolf: with a silver bullet, a silver knife, or a stick. there seems to be a glaring disparity between the first two and the third. "i'll sell you this watch for a thousand dollars, or nine hundred ...or whatever you've got in your pocket." why would they allow such a discrepancy between methods? to keep werewolf killing productive. who owns silver knives and bullets? crazy gun-nut collector types and rich people. mostly rich people, who don't want to use the bullets while there is a profit to be made selling sharpened sticks to the lower class. the lower class stays too tired killing werewolves to realize that if they stopped, the rich would have to get their hands dirty and do some of the killing themselves. the middle class sits around and waxes poetically about how nice it would be if the werewolves just went away. the rich people should just distribute their silver weapons equally among everyone. not taking into account that you need werewolves to stimulate work in the lower class. no werewolves, no need to kill them. no need to kill them - no need to mine silver or log trees. the only way to keep it going is to keep a tolerable amount of werewolves around at all times, so that everyone is working and no one is happy.