If someone could answer that question, I'd appreciate it, thank you.
According to Apple Online Store Help:
In accordance with state and local law, your Apple Online Store purchases will be taxed using the applicable sales tax or seller's use tax rate for your shipping address, or the Apple Store address where the item is picked up.
The tax listed during checkout is only an estimate. In California and Rhode Island, sales tax is collected on the unbundled price of the iPhone.
Your invoice will reflect the final total tax, which includes state and local taxes, as well as any applicable rebates or fees.
As far as shipping, the answer is yes. And they'll only ship to addresses within the United States proper.