While we’ve been admiring the Startouched Furline (12-month subscription mount) and the Coldflame Tempest (anniversary mount), Blizzard has rolled out another shiny new mount in World of Warcraft (retail): the Trader’s Gilded Brutosaur. But unlike these other recent prizes, the new brutosaur costs cold hard cash, retailing for $90 USD in the shop. That’s a…