The ammo could not be seconds, think liability, they or Wal-Mart do not want to get sued. There are different levels of ammo like most things. Range/plinking grade, hunting, self defense, you pay more for better quality control and components.
Now is the time to start reloading, a basic single stage press and needed equipment does not take up much space espeically if you load one or two calibers. I keep all my stuff except for the press in a medium plastic tool box and mount the press on one of my computer desk. Very little space is used and I run some decent ammo for less than anybody sells it for.
I only do 40 S&W now and have found it easy to make good ammo for my GLOCK 23 and 27.
Things are not going to go down in price, they are going to keep going up so we have to live with it.