| An Enquiry Concerning the Principles of Morals. Hume, David / Used - Hardcover | Raptis Rare Books | 1st Edition Slipcase | $11,000.00 |
| Enquiry concerning the Principles of Morals HUME, David / Used - Hardcover | Heritage Book Shop, ABAA | 1st Edition | $8,500.00 |
| An Enquiry Concerning the Principles of Morals Hume, David / Used - Hardcover | Leakey's Bookshop Ltd. | 1st Edition | $6,180.85 |
| David Hume : An Enquiry Concerning the Principles of Morals : A Critical Edition Hume, David; Beauchamp, Tom L. (EDT) / Used - Hardcover | GreatBookPrices | As new | $363.23 |
| David Hume : An Enquiry Concerning the Principles of Morals : A Critical Edition Hume, David; Beauchamp, Tom L. (EDT) / Used - Hardcover | GreatBookPricesUK | As new | $343.37 |
| An Enquiry concerning the Principles of Morals: A Critical Edition (Clarendon Hume Edition Series, Volume 4) Hume, David / Used - Hardcover | Mispah books | As new | $332.39 |
| Enquiry Concerning the Principles of Morals David Hume / Used - Hardcover | Basement Seller 101 | | $50.00 |
| An Enquiry Concerning the Principles of Morals (Hackett Classics) David Hume / Used - Hardcover | ThriftBooks-Atlanta | | $49.61 |