Very true! That is one of the most frustrating things when ordering from ebay shops! It's rare you get good communication from them, and you never know when stuff will arrive!
Every time I have ordered from AE before friday I have had the 'your order has been dispatched' email the same day, and received my order by the next despite only going for the normal 1st class post service. They are great for ordering stuff that you NEED rather than just stuff you want.