valuable consideration
noun1
Law An equivalent or compensation having value given for a thing purchased, such as money, marriage, services, etc.
- a purchasor for a valuable consideration, without notice, might hold the land discharged of any trust or confidence .1765–1769, William Blackstone, Commentaries on the Laws of England, (please specify |book=I to IV), Oxford, Oxfordshire: […] Clarendon Press, →OCLC: