trade something in, trade in somethingExchange a used article in part payment for another.
‘she traded in her Ford for a Land Rover’
‘The British know about these and probably have a deal with them to keep these weapons until they can be traded in for cash in exchange for information.’
‘It'd better stay that way, too, because if one should turn up in my stocking I shall trade it in for a waistcoat when we get to London, see if I don't.’
‘Some sites run currency exchanges where players can take their platinum pieces and trade them in for real dollars or the game currency of another virtual world.’
‘But the sting in the tail is that you will have to find a final payment of £3,750, or trade your car in for a new one.’
‘With this in mind, the vehicle values are not realistic because James would not be able to get $23,000 from selling them or trading them in.’
‘In many cases, however, they pay for themselves by increasing the value of the machine when it comes time to trade it in or sell it.’
‘This upsurge brought more used cars on to the market as older cars were traded in.’
‘Is it still okay to complain about how hard it is to find a reliable mechanic for your Jag, or should we all be trading them in for used Saturns?’
‘We could trade it in for a sum not dissimilar for trading your car in or we can keep that and send it out.’
‘When it comes to trading in greenbacks for hardbacks, large bookstore chains win the gold.’
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