What Cara said lol. Say you buy an account for 20$, its active, has a mid-tier UC faerie, some NC items, & like 4 mil nps
(just throwing shit together lol)
Well nps sell for 2$/1mil so there's 8$ for the nps, 30$ for the UC & like 15$ in NC, if you successfully secure the account and get that shit outta there, you just made a 33$ profit. But don't buy them if you can't/don't know how to secure or else you just wasted your money.