Call of Duty's Warzone battle royale game got slightly bigger after the Season 4 update reloaded. One of the new changes added to the game was the Supply Run contract. It's an available contract that you, or your team, could complete by earning extra money during the match. But the supply contract works a little differently. Rather than giving you a hefty reward when you complete it, the Supply Race gives you a massive discount on things you can buy at the buying station.
When you enter the Supply Run contact, you and your teammates have a limited amount of time to reach a nearby shopping station. When you arrive at the buying station, you will have a variety of discounts for the items listed. Once the timer is up, you and your team can no longer use this discount to buy anything you need.
Because the Supply Run contract is all about using your money rather than earning it, you had better grab your Warzone match a bit. If you catch it too early, you and your team might only buy one item each, and then have to move on to the next contract. You'll probably want to make Supply Run your third or fourth contract during your Warzone game to get the most out of the money. However, Supply Run contracts are also a great way to save money on using all of your money to redeem a team member in the game.
You should expect to see a lot of teams chasing the Supply Run contract during your Warzone matches, probably around the middle of the game, when they have a decent pile of cash. The contract will likely enter the consistent rotation of items that you can pick up after Season 4.