Don't bother selling things on the exchange unless its Mk X rares or better. Commons, uncommons, and mk IXs and below, you're better off simply discarding it from your inventory (which gives you 40% of its value) or selling it at a vendor (for around 50%). After all, time is money, and when you waste time looking for exchange terminals, you're wasting money.
Post your ingame handle too once you make a character. It'll have to be something like charactername@loginname for us to add you as a friend and stuff.