I've seen unsigned first editions go for $400+. Keep in mind, if you list them on ebay or other such places you need to have a starting price high enough that you aren't going to get taken/reamed in the pooper. I've seen it many times, where an item is worth more than what it sells for. When I sell something, I always start with a starting price, never start at a penny contrary to what idiots/ebay tell you.
OP, we need more info on the books. There are first editions, limited editions, signed first editions, signed second editions (published in 1996), signed 1 of 500 limited editions, leather bound first editions (reelman has some of these). Etc. etc.... Each version is worth a different amount. Also keep in mind, there are soft cover books that are hardly worth $70.00 in used condition...
GSP, the first editions (The Rifleman's rifle) were published in 1982.
