Is your Significant Other badgering you to get rid of all those old D&D books? Well now you can and make money! This site gives pricing information for these somewhat valuable commodities. My own copy of Deities and Demigods does not include the Cthulhu myths. I was surprised to learn that only the third edition (which I have) expurgated the Elder Gods. Now how will I ever know the correct Charisma of Cthulhu? Bummer.