Selling this method to 4 PEOPLE ONLY! NO VOUCH COPIES.
This is 100% legal, and works as many times as you want. Leaking it doesn't affect me, only you as you can't use it as much if it gets over used. It will last for ever if no one leaks it.

Selling each copy for a higher than the last amount.

First copy: 0.3 BTC
Second copy: 0.4 BTC
Third copy: 0.5 BTC
Fourth copy: 0.6 BTC

If you ask me why I'm selling it, here's the answer: I DO use it. I sell on multiple forums & extra money is never bad.