the nice thing about playing DA is that it brings out more interesting ideas and whatnot, but lets get moving on. as aeni and ikkleste pointed out, it is against the ToS and, thus, it is a bannable offense and an action that is legitametly looked down by the FFXI community. yet, here's another idea: do we as players have the right to be vigilante's in enforcing the rules? would and should we just be limited to reporting acct. buyers to GMs (which there is no hard evidence except from the exact payment history - which I doubt SE or any of us can actually find)?
also, as what ellipses and ikkleste had mentioned about decisions that tread over other's lives.. let's say a murderer finds killing people fun, thus the wrongness in the argument of people's right to do what is fun, should people have the right to punish the murderer? or should it be left to the government who enforces the rules (in FFXI case, SE)? Heh, a very extreme analogy but yeah
it may be easy to determine who has bought an account, but it is very difficult to come up with hard evidence of it actually happening.