A veteran employee at Asda, a Walmart subsidiary in Great Britain, had a neat trick: She would artificially inflate the value of customer's vouchers -- sometimes even double them -- and pocket the difference. When police finally raided her home, they found almost 80,000 pounds in vouchers (the equivalent of $126,000), over 6,600 pounds ($10,000) in cash, and "an Aladdin's cave" of unopened goods bought on shopping channel sprees.
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