I'm mainly talking FMJ/practice stuff. You can find personal defense stuff for nearly every caliber in my area, just have to pay insane prices. As far as practice stuff goes though, not so much.
.45 FMJ is available if you look, usually for not much more than pre-panic prices. I saw some yesterday on sale with a two box limit, the rest you could buy as much as you could carry.
.380 seems to be everywhere, unlike after 2008, at normal to slightly higher than normal 380 prices.
.40S&W, boy do I wish I had a .40 pistol, you can trip over the quantities at the places I frequent. No post election price increases and no limits on purchases to boot. Saw a guy staggering out with an armload yesterday.
FMJ and LRN .38spl is plentiful, but somewhat expensive. Heck I can even find .32ACP and 10mm.
9mm, on the other hand.

I'm calling it Unobtanium. Supply is down, prices are up. The only places I've occasionally found it have it priced above $20/box. Elswhere, it's anywhere from $14-$17/box, but it's like striking gold if you find any to get a typical 2 box limit.
I stopped by Gander yesterday since they put their ammo out Friday mornings. The clerk told me the 150 or so people lined up outside before they opened bought all the 9mm I hoped to find.