What I've found is that buying ammo online doesn't always save you money.
It all depends on where you live because of shipping costs, and how much the online vendor is selling the ammo for.
I've found that in many cases, either I'm paying more than wal mart prices, or I'm only saving at most, like $20 per thousand.
That's not enough of a savings for me unless I was buying a thousand rounds a month. But if I'm only shooting up a thousand rounds every 4 months, I'm only saving 5 bucks a month. I'd rather just buy it locally if it's available.......