With $1,000 burning a hole in your pocket I'd get a good condition, used gun for around $500 or so then go buy all of the ammo you could find for your existing guns or the components to reload thousands of rounds.
With the availability of ammo so low and the prices so high I'd get a good supply while you can. If you don't reload you can get a press kit (the Lee turret is a good, inexpensive choice), dies and components necessary to load a butt load of ammo for $500. After all, what good is a new pistol or rifle if you don't have or can't get ammo for it.
"Shoot low boys...they're riding shetland ponies in search of true grit" Lewis Grizzard