Kabam removed the 'Sell Champion' button back in 2021. While it might feel like your roster is getting cluttered with low-rarity dupes, they are actually doing more work for you now than a one-time sale ever could.
Do not sell duplicates. Just let them pile up in your "Stash." When you open a crystal and get a dupe, the ISO-8 goes to your stash. Let it sit there for 7 days. Only claim it when you have a specific Champion to level. If you don't level anyone, let it expire rather than selling the source Champion.
Kabam removed the 'Sell Champion' button back in 2021. While it might feel like your roster is getting cluttered with low-rarity dupes, they are actually doing more work for you now than a one-time sale ever could.
Do not sell duplicates. Just let them pile up in your "Stash." When you open a crystal and get a dupe, the ISO-8 goes to your stash. Let it sit there for 7 days. Only claim it when you have a specific Champion to level. If you don't level anyone, let it expire rather than selling the source Champion. how to sell champions on marvel contest of champions