I recently won the Times Cryptic Jumbo Crossword again and duly received 3 splendid books: The Times Universal Atlas of the World, Collins English Dictionary and Thesaurus, and Bradford's Crossword Solvers Dictionary.
All three are still in their cellophane wrapping and since they are now duplicates I wish to sell them.
The Atlas alone is 'worth £150', but I would be happy to part with all three for £100.
Any suggestions as to how I might do this?