text: i need to know how much the charlie brown book set titled: "the world of charlie brown" is worth.? this is a nine-book set of charlie brown stories. each book has two stories inside, and they're copyrighted around 1955. the condition of the box is slightly poor, though still usable. the books seem just fine, however. a used book site http://www.alibris.com lists various copies of your book set in various conditions for priced ranging from $35.00 to over $200.00.  higher priced items are usually in excellent condition.  read the descriptions of the items at the site and decide what description matches your set.  that will give you a good idea of what they might be worth.