Yes i noticed it when you have stadium items duplicates... like badges, kits etc... if you quick sell it does sell every duplicate... i think it makes sense since everything from the players to all the other stuff you win are duplicates...
Me... i always check for tradable duplicates from the club... after if i do want to keep the players and quick sell for zero or not.. i do first send the player to the sbc storage if i want to keep them for future use...
Do check if you have tradable stuff before you sell for zero... you'll make extra coins for other card packs, evolution and such....
Hope it helped!!! Peace
