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I would assume so seeing as (here anyway) the tax free is a state thing, no one can opt out of it (unless they don't meet the criteria for what is tax free).
 
Taxes aren't an "Apple thing," but as has been mentioned, a state thing. Apple simply collects or not as, when, and where required by law.
 
I'm sure Apple would love to cut as much costs off their prices without losing a cent on their part.
 
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