If you’re finding them at a physical Walmart or the Dollar General for a buck, just go there and buy 12 or 24.
They don’t care how many you buy. (I assume you mean the individual serving peel off top, cups)
Or…if you’re real clever get a bulk pkg. at Sams or Costco and individually bag them in ziplock.
I’ll warn you ahead of time. Either one will go stale if they’re in your pantry long enough.
(And, if you eat miniwheats everyday, might wanna pick up a bulk package of TP, as well)