I'm in a very similar situation myself. My father was a bookseller and collector so I've spent all my life (64 years) surrounded by books. I've tried ebay, 1 week is just not enough. I've tried abebooks and I know it's my own fault but I lost money there. I've emailed my local book club, no reply. I've tried Blackwellls rare books online, sent them a full description of something of selling price about 75 pounds, got a 'no' back. Ive already given away 2 vanloads to a local charity but I have loads more. Antiquarian, 20th century early editions, religious stuff. Im honestly losing hope....