I just bought 3250 rounds of 40g Federal Automatch through LAX Ammunition for $265...$288 total after shipping (8.86 cents per round). It's about the best deal I've found in a couple of years, so I decided to jump on it.
Federal 22LR AutoMatch 40GR Lead Round Nose 3250RDS (AM22)
You can also buy 325 round boxes for $26.95 each. No limit...
http://www.laxammo.com/ammunition/22...s-am22/44-1037