What you need:Nexus Pro
Cost:15$
Script:$2
The best one and that is not a free one is at rscheata.net by Rani. Its called HXS Woodcutter(something like that), when i used to bot months ago it pwned very badly and i never, ever got a ban on it, ever. Its like the best and it only cost $2 a month, hehe.
It got me 1-81 wc in less then a week, it really ownz. And its like a gurantee for no ban.
$15 is only 5 mill gp, not that much, so i assume in a month, you will make at least 10 mill or more, so $30>$17