I ordered two Antminer S3's from Bitmain and paid for them (1.28 btc).  I checked the status and it showed "shipped," with a tracking number.  The package was delivered today, but it only had one miner.  I was just assuming I would be getting both and when I look under "My Account" on the Bitmain webpage, it only shows "shipped," with no mention of another shipment. 

Is this normal?  Should I be expecting a second package?