CUSTOMERS of the internet auction site eBay are being defrauded by unscrupulous dealers who secretly bid up the price of items on sale to boost profits. An investigation by The Sunday Times has indicated that the practice of artificially driving up prices — known as shill bidding — is widespread across the site. Last week one of the UK’s biggest eBay sellers admitted in a taped conversation with an undercover reporter that he was prepared to use business associates to bid on his goods for him. Our inquiries found evidence that a number of businesses — ranging from overseas property...