those are lead bullets only, not ready to fire rounds...
do you have a reloading press?
I'm guessing you got a little messed up here and thought that was for ready to shoot ammo...
if you want really cheap ammo..
http://www.ammoman.com/index.htm
try there, click on 45ACP at the top, and order away...
95 bucks for 500 rounds of Wolf ammo, can't beat that with a stick...
dirty ammo, but will shoot well enough.
order a box just to see how your 1911 digests it, if all goes well, order a huge lot and shoot away