300-325.. is a great deal. Just look at gunbroker if you have any doubts.. Alot of Refurb Russian SKS mags were replaced with elctro penciled ( mine included) during the refurb.
Mine is a refurb 1950 TULA all matching minus the mag, and i paid 350 + SH$.
Sub 350 you cant go wrong... they are going 800+ for non Refurb around where i live
The main thing that drastically effects value is-
1. Has it been tapco Fu*ked
2. Is the stock refinished/bubbaed