I feel that as long as you find an indicator that works. If the new update comes out and I have been using that indicator for a while, then I will pay the real developer for it. This is also the other reason I am trying to create my own and figure out what I like. I use these versions that the educators did for us to see if I like the indicator, but if it works and/or makes me money, then I buy the official one. I look at it this way, if I make more than the indicator costs me then it is worth it for me to buy it. If I don't, then it is either not worth having or buying.