With a refinished stock it is worth 350$. The value on a standard non-refinished AG-42b is 400-700$. Just because people have jacked up the price on the EE doesn't mean that is the value of them (within the last 6 months I could have bought one for 400$).
These guns are also very ammo sensitive, nothing like your modern semi-autos. If you do buy it, I highly recommend reloading. If you don't reload and are still insistent on shooting it with factory ammo, DO NOT use FEDERAL ammo. I had a out of battery detonation with Federal due to the more sensitive primers.