I am about to buy a 900 ibook. I am not sure if apple.com will charge sales tax (I am in SC, and there are no Apple stores here). I did the "mock" purchase, all the way up to the credit card information. The button says "Place my order." So I'm thinking (hoping) that Apple will be upfront about the tax before the purchase is totally finalized. If there is tax, I'll just go to a reseller. Anyone know?