An article in the latest issue of CACM (paywalled) quotes some prices advertised by criminals for elementary attack building blocks:

• DoS – $50…$500 per day
• hacking a private e-mail address – $30…$50
• forged identity documents – <$30
• software opening fake accounts – <$500
• custom-made malware – $1,500 + monthly service fee

If you want to get rich, don’t waste your time on developing sophisiticated attack techniques. Look at the services available and devise a business model.