I have located new in box Mini 14 GB model (factory flash suppressor, bayonet lug, etc.). Complete with factory folding stock plus a Ruger full length (i.e., non-folding) stock. Several 20 and 30 round mags, Fired less thant 100 times. Comes with original Ruger box, owners manual etc. How much should I offer? What would be a good price.