There have been delays in shipments to WA due to a recent train derailment I think 10th April. It can take several weeks for people to receive parcels as there is a backlog according to Australia Post. I have had several customers complaining about slow postage so hopefully eBay will remove any undeserved low scores or negative / neutral feedback sellers get due to this out of control issue. Linky below.

http://auspost.com.au/about-us/important-updates.html