Yes, bounty is very profitable because i have already earned through it and what's very more interesting about bounty is that you do not need any money out from your pocket. Some people here even claimed they became millionaire of a single bounty only.
If you say you have already earned enough from bounty, i could say you have used multiple accounts to cheat many bounties. Same goes with "some people" who you said on above.
We don't need any money? Is internet costs free in your country?