Here in PA you can still find the Australianicon L81A1 teardown barrel for sale in the 300~ 350 dollar region. I see them at shows, offered up by folks who bought them back when they sold for 60 dollars from SARCO and flipping them. They generally sell, though I do not know the actual sell prices.

From what I understand they work well with generic Mauser actions and shoot 130 to 175 Gr bullets well, having a 1-12 twist.