[Impossible]

With tabletop games kickstarter is effectively an outsourced preorder system. The game is finished but they can judge how large this print run needs to be and collect money for it early, you are basically guaranteed a product. This assumes your reason for avoiding kickstarter is that you'll get scammed or not receive a product do to incompetence (which has happened to me with videogames and hardware products). Otherwise its likely you'll have to wait until late 2018 or early 2019 to buy this game or try to find a copy of the first run of the base game somewhere.