220 grain seems a bit odd, but then again I'm not in south africa.
Winnie White Box sells for 17.79/100 at one of the walmarts locally. (And if thats in error I will be displeased with the person who informs Walmart of that error) Speer lawman is good also, but not necessarily cheap.
I'll also agree with blazer brass, however around here I've never really been able to find it cheap enough to preference it over WWB. I've found the aluminum case ammo to be kinda dependent on the pistol. Some like the aluminum ammo while other pistols do not.
However, I ran 200rds of MFS ammo tonight which was truely foul. While it was fairly accurate, it was also quite smoky and left my stainless springfield looking as if it took a sunday saunter through a soot pile. Then again I paid $6/box for it so I guess I get what I paid for...