Modern cards are heavy, dense, and mostly cooler — protect the PCB from the cooler's own weight.
GPU retail boxes have molded inserts engineered for exactly this card. If you kept it, use it — inside an outer shipping box with two inches of fill around it.
The item with its serial number visible, then the packed box before you seal it.
Upload the photos as proof of condition on the order page. The record freezes at handover and counts if anything is disputed.
The drop-off receipt proves when the carrier took custody. Tracking takes it from there automatically.