Crucial currently only ships by UPS Mail Innovations. I live about 500 miles from Crucial and it's been a week since they said they shipped it and it's still not here. I suggest buying elsewhere if you want your memory delivered in less than a week.
Edit when asked if they could print off a USPS Priority mail label and hand it to their mailman Crucial replied "Due to the high volume of orders and fluctuating inventory we have been receiving recently we have decided to disable all expedited shipping options to ensure we are keeping up with the current demand."
Evidently they are trying to sell less of what they have for some reason, perhaps to keep the price from dropping. Don't know.