hmm please before you get the cylinder go to various online companies that sell ammo.
The most commonly found ammo in the bulk 45 long colt category is well, $0.85 a round before shipping if you buy a 250 round container. Then toss in shipping, taxes, it gets screwy.
the best price i have seen in person since the panic started was 30 dollar for a single 20 round box of federal semi wadcutter hollowpoints. before tax.
You might think percussion caps are expensive, if it has cowboy on the box most companies add on 5-8 dollars per box.