Shooters with ample supply aren't going to sell for two reasons..

1. It completely defeats the purpose of stocking up. You stock up to avoid running out. If you sell any significant amount you risk doing just that. If you're stocking up so you can resell in a shortage then you're a speculator, or a profiteer, or worse, and shooting has nothing to do with it.

2. Whatever they sell at "normal" prices has a better than 50/50 chance of showing up in resale somewhere. That just makes the whole thing worse.

I've sold a few at normal prices. To people I know and am comfortable that they aren't going to resell them.