With the content drop in FC25, EA Sports released the special 83+ x14 Upgrade SBC and is available for 3 days in EAFC 25 Ultimate team mode.
By completing the SBC users Earn a pack containing 14 Rare Gold Player Items, rated 83 or higher. [UNTRADEABLE]
Requirements for completing 83+ x14 Upgrade SBC
- Min. 1 Players: Team of the Week
- Min. Team Rating: 84
83+ x14 Upgrade SBC cheapest possible solution:

The SBC costs around 33,000 coins (subject to change with the market flow) and the The rewards look absolutely worth for completing this SBC if you got enough coins. It’s important to note that it is always better to use the players already present in the club first especially if they are non-tradable as you will never be able to sell them and make profit in coins.