Account selling is legal here in forum considering that, there is no rule about it. But that will make you a not to trust person and lot of DT will put a red tag on those accounts.
With regards to the selling of merit's and to the people that are going to buy, just imagine they are having a hard time receiving merit so if they are going to buy, their merit count will just be stuck on those number, they will need to buy again to earn more. The ranking will be very expensive to them, and the merit abuse will be so easy to see. They will get a red tag doing that.
although sales are legitimate in this forum because there are no rules about that we as members of the forum here should not do that to anticipate DT giving redtrus to our account, just do the positive sell other than the account can still generate money and trust