According to the book American Tools of Intrigue, by John A. Minnery & Joe Ramos,
Section 1 on F.P. 45 Liberetor: The Gun That Didn't Win The Western Front;
The one million pistols were completed by the fall of 1942, at a cost of $1.72 per pistol.
The finished weapons were individually packaged in waxed carboard boxes... containing in addition to the pistol:
(a) 10 rounds of .45 ACP ammo
(b) Sheet of comic strip instructions in sign language
(c) Wooden ramrod for ejecting spent casings
(d) A wood spacer block to keep the parts from rattling
The total wartime cost for the package was $2.10.
The F.P. 45 project was referred to as a flare projector to throw any spies off track while it was being designed and built. All 10 rounds could be stored in the grip via a trapdoor on the bottom. They were trying to make them for under $1 but it went a little over budget. There were at least 6 variations but the most common is the third model. There was a two-shot version with a sliding breechblock. Silenced versions also exist. I wish I could scan my book and upload it. There are 46 pages on the Liberator including blueprints of every part. There's a picture of one with a silencer on it and the two-shot version too.