what are you on?
You're lucky your AT&T order wasn't delayed for weeks on end without explanation like hundreds of others who started threads complaining about this.
ALWAYS ORDER FROM THE MANUFACTURER, especially in a fixed price scenario. You can't change the price, and unless you go with an online reseller (B&H, etc) you can't avoid tax.
Do you not realize ordering from AT&T means AT&T has to order from Apple, wait for it, then send it to you?
Also account setup on an iPad takes less than 3 minutes and requires no phone calls out of the box from Apple or anyone else.
Buy from Apple. get it faster, have better service, and screw the middle man.