it better be the chinese one and not a russian or Neg reps inbound for not contacting me!
(joking)
Although closed through the holidays, collectable arms and ammo in Merrimak NH had a few. IF you have a C&R, there is at least one place selling M59 yugos.
As stated, Gun broker is also a good place with patience. if the price gets too high,walk away and wait the next one.
You did not say what kind? Yugo, russian, chinese, romanian , Albanian? we could do an entire thread on the merits of each.
Good luck, you can never have too many SKSs ( I tell my wife, they are like shoes and she gets it)