I've updated the main post with length for payment information. I've currently put as few as eight or as many as seventeen for the time being.
From now, when listing shipping/payment times, please post what payment method you chose.
EDIT: No_Exit, can I use that picture in the FAQ? (I'll credit you.) I'd like to use it, at least until I put up a full picture-by-picture walk-through of trading in at Gazelle. (I'd like this thread to be as thorough as possible. :P)