Please refrain from using the M14 Firing Line as a substitute for each individuals responsibility. Any threads asking for a value will be deleted with this Sticky.
Also if you should decide to answer one of those questions, please refrain from giving a value. Without seeing the item in your own hands to inspect, you can be doing an injustice to either the buyer or seller by stating a value.
You can research the Sold Classified Listings (SPF) section below here which has over 7,600 listings, or other auction sites across the internet to come up with a general price for an item(s).