Here you can buy the Zero-K $9.99 Bronze Pack DLC key (add-on to Zero-K) at a bargain price. After purchasing, you will immediately receive a key, by activating which you will add DLC to the Zero-K game to your steam account.
Without the original Zero-K game (the game is free) on your account, you will not be able to activate the $9.99 Bronze Pack DLC add-on.
You can activate the key in any region.
Steam