My local Walmart carries the Tula .223 steel-cased ammo for $4.97 per box. I try and get there every couple weeks to pick some up because it's really hit or miss here. I have found that it shoots equally as well as the Brown Bear and other steel-cased ammo, but it's cheaper as I don't have to pay for shipping.
I'm not knocking the Brown Bear stuff at all. I've shot about 500 rounds of it in the last 8 weeks, but unless you're buying it in super-bulk or ordering alongside other stuff to eat up the shipping, it's probably cheaper to get the steel-cased stuff locally.
Three old hunters were walking through the woods one day. The first looks over at the others and says, "Windy isn't it?" The second says, "I was sure it was Thursday." The third says, "Me too! The heck with hunting, let's go get a beer!"