I have a parcel coming from Kingsgrove NSW lodged with AP 13 Aug (del date estimated 17-19 Aug).   Tracking shows it has been scanned at Granville three times (Tues, Wed, Thurs).  Don't know where it is now (I am in country SA).  I normally just leave feedback for transactions and ignore all the other stuff so don't know whether the seller will cop a defect or not because clearly it will arrive later than the estimate which is out of the seller's control.