Here is the deal. Paying for the hack WOULD somewhat keep people from abusing it, but whats to stop them from giving it out for free to friends that would use it the same way as ThirdEye did and get banned and get it patched out FAST.
The only way to get any good publication out of this and get good use out of it and not ******* off the community is to sell it to the crone farmers LOL. They do not pk much and if they do they are doing it for defense. Trust me... I have had many wars with the chinese farmers on multiple games expecially Lineage 2.
Now back to the paying thing. You wouldn't get much money from it due to a lot of people can not pay for it. On the other hand you would get money to do development on another type of hack or bot (other than the one 369 or botsmall has). It would be a nice way to sorta start a business up :P
My opinion is to put it in underground or have people that pm you that you have talked to and kinda trust and you send them a download link through PM. That will keep it limited and also you would know on here who has the hack and who is using it so you could kind of weed it out and figure out who misused it. Its not my hack so do as you wish but it is just a few suggestions i am throwing out to you. Think about it. It may help the community for us all. As far as underground goes..... I cant get in there to look at anything but then again I do not know how to hack and can not give anything to get admitted. The only thing that I could possibly give is advice and feedback on the hacks/bots there.
Meh... rambled on.... lol.. sorry for that and flame away the ones that do not agree with me. If you do then give thanks