AT&T, Verizon, and almost every major 3rd party reseller has a location in IL and does tax. Amazon isn't selling them, and B&H photovideo seems like the only other place to get one tax free besides overpaying on eBay.
Plus, I'm stuck with $$$ in Apple Gift Cards! I'd rather pay a tax premium to have a manufacturer like Apple send me a product. The shipping estimates and info are real and they don't lie and cheat you like AT&T and Verizon seem to be with online orders that were placed day 1 still left unfulfilled. It's worth 80 bucks in tax to guarantee I get one.
Oh brother. Google is your friend.
You could have ordered from the following online retailers and paid zero sales tax. Each of these retailers have shipped thousands of iPad 2's including 64GB 3G AT&T models while Apple is just beginning to ship the high end AT&T models.
http://www.powermax.com/
http://www.jr.com/
http://www.adorama.com/
http://www.bhphotovideo.com/
http://www.sweetwater.com/