Cope's still has Wolf 7.62x39 available for $320 per case plus 9.95 shipping. I ordered a case late Friday afternoon and it arrived today (Sunday!?). Cope's is nothing if not fast!
Wolf Ukraine 7.62x39 123gr HP 1000rd Case, Cope's Distributing
I think bradis has 7.62x39 1,000rnds for $299, or atleast they did a few weeks ago.