The cheapest I ever
sold a handgun go was a brand new CZ-52 for 1200 Marlboro miles.
Here's the deal: My sister in law's husband was always picking up Marlboro miles as they were on their daily walks. She always berated him for doing that and never sending them in for the Marlboro gear, but yet when he got ready to do so, she complained that the shipping was WAY too much money for it, blah, blah, blah.
So they were over at our house, and she started in about them, so I said, "Bring your bag of Marlboro miles over next time, and I'll trade you a pistol for them." I knew he had always wanted a handgun, but he could never bring himself to buy one, especially with his wife thinking that anything like that would be spending the kids' inheritance.
Anyhow, he did, I did, and she had to shut up and listen to him tell everybody how he got his handgun by ignoring her.
Cheapest was a Bicentennial marked Ruger .30 Carbine for $125 from a guy who had been working on the Alaskan pipeline, and could afford anything that struck his fancy, but when he got back down here, he had trouble adjusting his spending habits for the first few paychecks.