I just ordered from them, and I believe I remember seeing that the doctor has 8 hours to verify the prescription from the time they send the request (I assume meaning business hours, hence until Monday morning), thus they may not be able to be shipped until Monday morning if your doctor didn't get right back to them. I ordered some a few weeks ago on a Wednesday night and they were here on Friday. Of course one of their distribution centers is only a few miles from here
Edit: And yes they did email me when they shipped.