( July 2, 2012) -- Sixteen months after collecting more than $3 million in penalties from operators of a DVD vending machine scam, the FTC has mailed 454 refund checks totaling more than $2.9 million — nearly $8,600 per check, on average. The case was part of “Project Biz Opp Flop,” an FTC law enforcement sweep aimed at prosecuting business opportunity scams....