Shackbox is free, but the support is not.
i ve took this décision considering the amount of time i spend helping here and there and building shackbox. Being always available for free doesn t pay the hosting bill, so i had to take this décision if i wanted to have shackbox still available for you.
I am sure you understand.
Membership will be sended you once you request support (i don t provide support concerning all that is purely related to the use or the system ubuntu itself).
The price is 10$ / 3 months, why 3 months, just because after 2 months you ll be autonomous without any problems.