I have 5 Codes available for £100 each on steam. Happy to sell individual or all at once . Feel free to PM offers looking for around 95%+ but will consider all offers. More you buy cheaper i'm happy to go.
Below is how the codes work.
Launch Steam and login to your account.
Go to Games, then click on the "Redeem a Steam Wallet Code" option.
Enter the code you have received and click "Continue".
Funds will be added to your Steam Wallet.