I've bought two 336s in the past year. Both in .35 Remington. One could pass for unfired, but not documented as such; the other a hunter/shooter with a sweet trigger. In my neck of the woods, your 336 in .30 WCF with the missing rear sight parts, stock dings and non-OEM recoil pad, I'd say $350. Just my opinion, but that's what you asked for, right?
^^^^^^^^^^^^^^^^^^This^^^^^^^^^^ Pistol grip, non OEM recild pad, rear sight, hurts you on this one. Money is in the straight griped.