Possible Clues:

• Gives as partial payment
• Exchanges horribly strained
• Hands over an object as part payment for a new one
• 'Hands over the old object in part payment for the new (6,2)'
• Swaps for an upgraded model
• Exchanges, as an auto
• Does something with old cars for some French in practice
• Recognised artist holding up exchanges in commerce
• Buys and sells
• Exchanges are down — isn't everything volatile