I think it is a fantastic idea to change the time when these specific items are shelved. Mornings, some days, . . . mid day, . . . afternoon, evening, . . . keep them guessing. I got lucky, the other day, and managed to pick up 3 boxes of 100 count Federal bulk 9mm. First time in who knows how long that I actually purchased 9mm [because I will no reward gunshow antics of those "supply and demand opporunists" with stacks of overpriced items]. Whether or not you believe they have the right to do this, . . . and it is "fair", . . . I won't be the one standing in their inflated priced line.
I've been getting fairly lucky with 7.62x39 at the local Walmart. If I see it, I'll get it. The problem with "having them raise the prices up" is that once that is done, it will be improbable that the pricees will ever come back down. It will be the new "fair market value" and will keep a lot of people from being able to get it.