you don't see much of a savings buying a little here and there,
you won't see large savings until you begin buying in bulk, maxing out hazmat fees, S&H etc., even when you buy local you gotta add in taxes,
and you gotta shop smart, plenty of deals on the net, but your gonna have to look for them, sign up/register at the loading sites and for their E-Sales notification, midwayusa has plenty of E-coupons that you'll save on, for the most part they cover S&H only, but thats still anywhere from $5 to $30 off an order,
I know it's hard to plunk down 5+ bills on an order, but in the long run it'll save you quite a bit, just this past month I've ordered over $500 in bullets from midway, they had the blemished bullet sale for %50 off, we're not gonna see bullet prices that low again for a long time, if ever,
also look at yard sales/estate sales etc, I've found/bought components for literaly pennies on the dollar,
look at this link and it'll give you a little better idea:
http://ar15.com/forums/topic.html?b=1&f=9&t=639526