Hereabouts the last gun show was standing room only ten minutes before it opened, and we have crummy gun shows. An Olympic M4rgery was $1700. 5.56 was a dollar a round.
All the regular ammo places (two Wal-Marts, a Fleet Farm, a Gander Mountain, and an LGS) are out of ammo.
Given that, I have no idea where all the people packing the range found the ammo to shoot while they were there...