I love how everyone is big on this no sales tax thing. Just because they don't make you pay it when making the purchase from another state doesn't mean you aren't obligated to by law. I guess you just skip right over the section that asks you about out of state purchases on your tax return. Not that I don't do the same thing but technically those purchases are very much taxable.
That's like taxing the income I make selling games to Gamestop; I'm "obligated" to pay it but there's no way that money is leaving my pocket.