Podz are the crates on the server. When you buy a Pod, you receive 1 key in-game to open the matching crate. The higher the price of the Pod, the higher the value of the possible rewards you can win.

Every Pod has a guaranteed win, so you will always receive a reward. In-game, you can click on the Podz with your hand to see all the possible items you can win.(You'll receive the item automatically ingame)