It depends on what reason the buyer (scammer in this case) chose for the return. If they chose a buyer faulted reason, they pay the calculated return label cost, if they chose seller faulted, you pay the return label cost. Since they are scammers, it seems unlikely they would choose a buyer faulted return reason. In that case, you can file a SAFE-T claim to try and recoup the return label cost that was calculated. Do note, however, that if the actual return cost is higher than the calculated cost because the scammer used a large or heavy box, whatever those additional costs are you are stuck paying. Also note that if the return was for $100 or less, it will likely get a Refund First Scan (RFS) where Amazon automatically refunds the buyer, so you will want to include the actual item cost in a SAFE-T claim to get that back as well. Also, if the item is over $100 or doesn't get RFS for any reason, Amazon will automatically refund the buyer if you don't refund them within 48 hours. (From my experience, it usually takes about a week in actuality for Amazon to do that refund.) If Amazon does the refund due to you not refunding, you can file a SAFE-T claim for it at that time. If, however, the scammer files an A-Z Claim after you receive the item but didn't refund because they sent you trash, Amazon will likely refund them and count it against your metrics, and in that case, you can't file a SAFE-T claim. You should be able to do a refund but do a 100% restocking fee for materially different when you receive the item back if there hasn't been a refund from RFS, but you don't have a way to deduct the return shipping label cost if they chose a seller faulted reason doing it that way.