I wonder how much of their 2-day is actually sent 2-day? Several times I've hit the $4 for overnight and it still came ups ground. I'd imagine at least half of

I wonder how much of their 2-day is actually sent 2-day? Several times I've hit the $4 for overnight and it still came ups ground. I'd imagine at least half of the products ordered are within 2 day ups ground from an amazon warehouse.