My Marlin 336W 30/30 (new) cost $312.36 four yrs ago, there now 366 bucks.
I saw a new Marlin rifle chambered in .44Mag (not sure of the model) for $700.00
at a gun store this past weekend.
The rifle (Marlin SC) sounds to be in good shape considereing the age of it.
Bargain with the gun store dealer and tell him $350. You never know. Sometimes if you wait long enough the price drops, but also that can work against you if it gets sold.