Classic Arms has the Bulgarian ammo for $125 per 800.
I've also got a couple of tins of the Polish stuff. The necks split, but not until I fire them and it doesn't seem to have any effect on accuracy.
The nice thing about buying PP or S&B is that they're reloadable - if you're careful, you ought to come out ahead even compared to surplus ammo.
Well we don't rent pigs and I figure it's better to say it right out front because a man that does like to rent pigs is... he's hard to stop - Gus McCrae