Locally, 440 grain Corbons are $38 and change for
12 rounds.
New Starline cases are about 50¢ per, primers are about 2¢ each, and 38 grains of H110 will set ya back about 10¢. I cast my bullets from
free lead*, and I get an average of eight or more reloads per case, which makes my long-term case cost 6¼¢, or less, per unit, for an average cost per finished cartridge of about 18¢ vs about $3.20 per round from Corbon, or $2.16 vs $38.xx per box of twelve.
*This is where I cheat on the price a little. I worked at a lead smelter for 23 years, and have "a few pounds" onhand.
If I don't figure my time in, or the cost of electricity to melt the lead, I have only about 18¢, or less, into a finished round.
(edit) Yes, the original cases used pistol primers, but Starline, and others, have switched to rifle primers and said cases are marked on the head with an R. DO NOT use rifle primers in pistol primer pockets as they don't seat flush with the case head and sympathetic detonation is a very distinct possibility, especially in these monsters.