In an interview with Forbes.com, Dan Clements of CardCops stated that "Credit card numbers fetch only $2 or $3 each on today's market...by contrast, a decade ago, credit card information comanded as much as $20 to $30 per credit card." For an extra $8, a thief can purchase a consumer's full profile which contains a mother's maiden name, social security number and date of birth.
Prices for credit card numbers among thieves are dropping based on ample supply in the market. Competition for selling credit information has increased, thereby placing price pressure on hackers. Its interesting to think that the law of supply & demand, and not delinquent consumer accounts, has made the cost of such information a commodity.