Depending on if you want brass or steel casing. If that doesn't bother you, centerfiresystems.com has pretty good deals on steel cased ammo. Tried some out on my g17 with no problems. I think 500 rnds of 9mm was $100 shipped. At this point, Walmart is usually the cheapest route if you want brass. Every now and again cheaper than dirt runs specials. Currently they have lawman 9mm 300 rnds for $66.
GOFFA Council Member
Gun Owners For a Free America
"Today, we need a nation of Minutemen, citizens who are not only prepared to take arms, but citizens who regard the preservation of freedom as the basic purpose of their daily life and who are willing to consciously work and sacrifice for that freedom."
~John F. Kennedy