Just bought 1000 rounds of .45 Winchester White Box ammo. Prices keep going up almost weekly, but WWB is what I use for shooting ranges/ Practice ammo.

The cheapest place to buy is still from Walmart.

.45acp WWB 100 round value packs = $29.88
.45acp Blazer Brass 50 rounds = $14.88
9mm WWB 100 round value packs = $18.88

As for self-defence rounds, I use Speer gold dots and Federal LE HST. Most ranges don't allow Steel cased rounds like WOLF ammo.