What did the buyer do after the vendor countered her offer ? By the way, the story has a a couple of minor issues. First, the tourist is not a buyer yet.
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AnonymousThat kind of situation is called haggling http://www.ldoceonline.com/dictionary/haggleIt's haggling when it gets down to a very small difference between the offer and counteroffer. The first offer, reply and then walking away is not haggling.