Ordered on Sunday evening and it arrived in less than 48 hours. Amazing.
It is a v.good service. But be aware, you're paying for that through the product price (or more specifically through the margin on the product), and to compare it to most other providers of CPE / SDE / computer equipment's delivery methods, is a bit unfair, given Apple operate at many multiple times the margin.
Also worth noting, that for a bog standard spec machine, you could have actually got it within about 12 hours through Amazon (for example).
It is, none the less an impressive set up that Apple's partners have developed.
They have a very cool set up if you order multiple items, namely accessories and a Mac, where some things are stored locally, other stuff is stored globally (reduces cost of inventory), and they meet up locally.
You can see that if you track your shipment and there are loads of touch points.
The routes they use for freight are fairly amusing too, if you're not involved in the industry.