They are listed for around $139-169 in SGN. Of course that's dealer price, but in quantities of one. That's about what I think you might pay at a gun show. It's also for the Yugoslav version, which sports a rifle grenade launcher and blade bayonet. No too bad for after 10 years. (BTW, I've had mine for longer than that, and paid more than you did, but it was an early import made for the Chinese military, not the stamped receiver version made for export.)
The ammunition however has gone way up, mainly due to the ban on import of steel core Chinese (or anyone else) made military type ammunition. The cheapest I see in SGN is $179/1000, and that's still Russian made with steel cases. It is however available for that price in three versions, FMJ, soft point and hollow point.
I have a confession to make. I’m older than I thought. What I said was 10 years is actually 17 years when I do the math ;-) I have the milled receivers as well.