Steam Game IdlerSteam Game Idler

Trading Card Manager

The Trading Card Manager feature allows you to manage your Steam trading card inventory directly within SGI, including the ability to view your card collection and sell cards on the Steam marketplace.

This feature uses an undocumented Steam API endpoint with strict rate limits to fetch card prices. If you encounter errors while selling card or fetching card prices, please try increasing the Sell Delay, or wait a few minutes before trying to fetch card prices again

You must add your Steam Credentials before you can use this feature

Configure this feature's settings in Settings → Trading Card Manager before using it

Click Trading Card Manager in the sidebar

List individual cards

Find the card you want to sell and input a sale price

Click to list the card

List selected cards

Find the cards you want to sell and input a sale price for each one

Click List Selected to list only the selected cards

List all cards

Click List All to list all cards

Confirm each listing via the Steam mobile app or email depending on your Steam Guard settings

Click Refresh in the page header to update your card list

Removing Listings

Click Remove All to remove all your active trading card listings from the Steam marketplace.

Pricing Details

When you use List All, SGI will list each card at its highest_buy_order. If that price isn't available, it will use its lowest_sell_order. If neither price is available, the card won't be listed.

You can choose which option to use by default by changing the Default Sell Option in the settings.

Marketplace Fees

Steam charges a 15% transaction fee on each marketplace sale, which is made up of two parts:

  • Steam Transaction Fee (5%): This goes to Valve for facilitating the transaction.
  • Game Publisher Fee (10%): This goes to the publisher of the game the card is from (not just Valve games—all publishers receive this fee for their own items).

SGI automatically subtracts the 15% Steam transaction fee when you set a sale price.

If you set a price of $0.50, SGI will list the card for $0.44. This ensures that after fees, you receive the exact amount you listed the card for.