Yes, those good old days are truly over, I worked at the GR Douglas shop from 1963 til I went on the Charleston PD in October of 1967 and we, as an employee could buy muzzle loading barrels for $5. Yes, I said Five Dollars. For a good deal for both you and your friend, the $125 to $150 range would be a good price.
Kind Regards
Frank Barker