People are not banned because of the mistake in the price for the LexCorps starter pack; https://forums.daybreakgames.com/dcuo/index.php?threads/xbox-server-bans.294006/
They got banned for exploiting a glitch that caused Daybreak to lose money, and instead of being morally upstanding people, they decided to "cheat" the system.
The vast majority were beaten with a ban hammer for something else. Not the glitch you eluded to. And Eff'em too.