$0.26. Now, if you have 10 accounts, that's $2.60. 100 accounts is $26. 400 accounts is over $100 a day passively. People go through ridiculous amounts of work just to steal under $1 around BCT. Thinking they wouldn't do the same for larger amounts is naive.
The first site when I get googling "captcha solving" asks for $1.2 for solving 1000 ReCaptcha. To get that $0.26, the abuser need to solve 288 ReCaptcha which would cost him $0.3456 if he uses that service. Of course I know nothing about that industry and there should be much cheaper service, but anyway his actual gain from an account should be very low. That's why I find the abusers pathetic.
http://solvemedia.com/publishers/captcha-type-in