Nexus will be obsolete soon ... they finally enforced the 1 account per auth rule and this is annoying many goldfarmers. They'll probably turn to RSBuddy since it's a lot more stable and can actually do randoms.
The Cap on auths is such bullshit, but at the same time, those who are hardcore botters and make amazing profit will probably still buy. If they make that much money off of botting, what's an extra $200 to be allowed 10 more auths?
I personally have a sneeky suspicion that rsbuddy is going to hack a few accounts slowly. I dont think they will go on a mass hacking spree but only a few every now and then so the majority of people wont believe the users saying they got hacked.