I think there are so many other Reasons why you shouldn’t buy an account but this is just as I’ve known.
It’s not advisable as a newbie to buy an account.
You can add other general disadvantages that concerns everyone.
Well as starter if you buy some will tagged that account as purchased account. Though buying and selling is allowed the DT system doesnt permit it at least for users who has compassion on dont having multiple account.
Maybe for expert one already in here and got familiarity probably he/she can mind or handle it the only thing is how can he prove its not bought account.