It looks like Recreator Blanks has their Polish marked AKM blanks listed for $60 right now. You'll still need a template to mark out the FCG axis pins and selector holes to finish the receiver, but this is otherwise a pretty good deal for a quality receiver.
Arms of America and some other sites have Romanian kits for around $300 to finish this receiver out.
Polish style embossments and engraving on a pre welded "80 percent" receiver blank.
The following work has been completed.
Receiver length has been trimmed.
Internal bolt guide rails are located and spot welded in place.
Magwell, pistol grip and trigger guard holes machined.
All precision bending is complete and top rails stepped down.
Complete assembly has been hardened separately prior to welding.
All parts are ceramic media tumbled to down to bare metal.
Selector detent notches machined.
Center support riveted in place.
Bummer, just saw this and they're sold out.