I'm sure glad I have enough for the next year or so of reloading and bought them while they were cheap.
This isn't the first time I have seen such a run on a commodity. Once it starts, it takes on a life of its own, the would be buyers see the empty shelves and that reinforces the perception of a shortage leading to more panic buying and even emptier shelves and on and on.
When the vicsious circle finally breaks down, people will have so many primers that they won't need to buy any for a long time and store shelves will be overflowing with primers that they can't sell and prices will plummet just like gasoline prices did a few months ago. A lot of people will kick themselves every time they look at those cases of primers that they paid scalper prices for.