This chap used to come to our base in Kabul with other traders every Friday, where they set up stalls outside our dining room to sell jewellery, art work, carpets and clothing.
I bought a silver and Lapis Lazuli necklace and ring. 'How much' I asked. '$60' he said. So I gave him $60 and he gave me the look.
He then went around his stall filling my bag with various trinkets to make up the value to $60. Clearly I had not played his game, and he wanted to make it right.