If the estimated delivery date for your item has passed, and you still haven't received your item, let the seller know.
The discount itself would simply be your fee multiplied by 10%, which would then be subtracted from your total fees.
It would be smarter if every time someone places a bid the time limit is be extended for a 60 seconds.
We understand you and the buyer came to a resolution regarding the issue, but the buyer could not edit their previously left feedback.