Fun game at the start. You can do F2P and get a feel for it, but paying some money will get you advances much more quickly. The cost of in-game resources is high. The huge issues currently are 2 fold. 1. The lack of silver farming is atrocious. To level 1 piece of gear to level 16 costs usually over 2 million silver. They charge $50 for 2 million silver. 2. To upgrade a legendary champion, it takes up to 16 books or more. They sell books for $25 per... Please read before investing.