This is the last day for Free Shipping (no minimum order) from Sportsmansguide. Free Shipping CODE: "SH1736".
They do not have much rimfire, but lots of other stuff. There is some Eley Target ammo 5,000 rounds for $664, which is about .133 a round.
Also related items like these .22 reactive targets:
I picked up a few more boxes of the "Colt" Russian sourced 168 grain .308. They had it for $10 a box, but now it is $11 (I have my ammo can full, now I need a few to shoot). You can't search for these so check out the Shooting and Security Sale from the main page.
They have lots of .223 Match ammo and 7.62x39 right now.