Gun Talk VZ52 7.62x39mm Barrels

I'm just curious about these. I'm interested in a VZ52 because I love my SKS, but the ammo, 7.62x45mm, is super expensive, there's no brass available, it's hard to convert cases, etc. The Czechs had a variant of the rifle in 7.62x39mm, the VZ52/57, but they seem to go for like $1200+. There's some talk on forums from about 15 years ago about 7.62x39mm conversion barrels, I was wondering if anybody knew anything about these or where to get them. I would also be interested in how much one would cost to make.