Isn't the idea here that you personally bought the item that the customer wants, so you have packed your bag yourself?
Fairly sure there are other issues though, as you'd be commercially exporting goods.
Don't most customs/immigration declarations ask you the value of the goods you intend to leave behind? So I guess it'd only work when you were returning home, not going out.
@atz started
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Isn't the idea here that you personally bought the item that the customer wants, so you have packed your bag yourself?
Fairly sure there are other issues though, as you'd be commercially exporting goods.