Hey guys,
I just picked up a bunch of 50 cal ammo cans at $10 each locally.
I found em via craigslist and figured I'd pass it on to anyone else who might be looking as well.
http://stlouis.craigslist.org/spo/4010344907.html
These are used but are in good to very good condition. He's got about 30-40 left. He will ship if need be.

He's got 30 cal cans for $5 each too. He has 3 pallets of these.
Based on my looking around locally & online, metal 50 cal cans are going for anywhere between $12-$20 plus shipping or sales tax and the 30 cal cans are going from $10-$15 plus shipping/sales tax.

I AM NOT AFFILIATED WITH THIS SELLER. I just thought I'd pass on the info to anyone else looking for ammo cans