Inside job / 8 bitcoin per record
Alternatively the data - or rather the *bulk* data doesn't exist, and someone is chancing that companies will pay up "just to be sure" ?
During the IRAs mainland campaign, more than one smartarse had the idea of pretending they'd planted a bomb, and demanding a few quid from the targeted store not to trigger a (very costly) evacuation. Bearing in mind any losses due to having to shut on a busy Saturday aren't recoverable from insurance, £1,000 or so may seem a reasonable fee.