I have used ammoman over in NJ a few times. My experiences with them have been good for bulk purchases.
http://www.ammoman.com/index.htm
Top line click on "retail" for store diections. If you want to save a lot, go pick it up. He is in Berlin, NJ. It's not hard to get to. I still have some family in NJ and when I visit I get my friends to chip in for whatever they need also. Usually the more you buy, the more you will save.
Shipping costs have gone through the roof, having a local like this really can help save some money.