Am I allowed to sell a 3 month Xbox Gold membership? If so, where can I post the thread?

i don't know you'd probably be best asking some GM, most people wouldn't know the answers to this, the gm's should but if they don't your probably not aloud to sell them at all, so your best suggestion is to ask a GM.

Why would he pm a gm for a market related question.....
a market squad member should know this so you can pm one of them
you can find them here they are green

its not supported by microsoft so its not supported by toribash