https://wiki.alliedmods.net/Finding_...inding_Offsets
It's easy to get information from binaries, that is, compiled extensions, there's even a tutorial on the alliedmodders wiki. Just making an extension out of it isn't enough. You have to be really, really good at hiding things. And even then isn't enough, because people are going to be after what you wrote fairly quickly. I'd say about three days after you choose to give out any compiled code, it will be figured out and all over the place.
Edit 1: This user is asking $150 for it but I don't believe it is worth that much. He is going to sell it to everyone he asks, he already sold it to someone else and promised not to sell it, but he is still trying to sell it to others. Don't buy it, eventually the code will be free, with how many people hes trying to give it to
Edit 2: MasterXykon released it!
http://facepunch.com/showthread.php?t=1341335 Say farewell to SetParent everyone!