EDIT: I have no personal experience with this website, but they're showing some ammo in stock, but most is out of stock. Seacamp32's thread lead me to search their site for more ammo available.
This place shows Federal 223 FMJ 100rd boxes for $70, max of 4. Free shipping if order is over $100.
Simmons Sporting Goods features FEDERAL AE223BL AMERICAN EAGLE from FEDERAL CARTRIDGE CO.
www.simmonssportinggoods.com
They also have 45acp 230gr FMJ Blazer Brass for $30 per box of 50, limit of 20
Simmons Sporting Goods features SPEER 5230 BLAZER BRASS from CCI/SPEER-BLOUNT INC.
www.simmonssportinggoods.com
They have 9mm 115gr FMJ blazer brass for $18 per box of 50, limit of 4 (originally found by Seacamp32 here:
GUNS/RLTD - 9mm Blazer Brass available now)
BLAZER BRASS 9MM LUGER Ammunition 115 Grain Full Metal Jacket - 50 Rounds per Box The Standard for Reliable Range Ammunition Blazer Brass 9mm Luger ammunition represents the perfect balance of quality, performance, and value for modern handgun enthusiasts. Manufactured by CCI with decades of...
www.simmonssportinggoods.com