Although buying/selling of accounts is not against the forum rules, it is frowned upon by most members here. If the bought account is discovered, it will most likely be red-tagged which renders the account useless. It's still better to work your way up.
You're wrong mate cause buying and selling of this forum account completely encourage spamming of the forum. Automatically buying and selling of account is against the forum rules. I will advise the OP to develop his account but if he's planning to buy an account cause he want advertise their project there are some people in the service section who offer such services.