Amazon will start charging sales tax in September and for the last 10 years, I had bought most of these art books from them at a much discounted price. Normally, I would thumb through a book associated with a museum exhibition and I am really just too cheap to pay $70 for a book, so I get it online for $35. In addition to the free shipping, the fact that I have to pay no sales tax got me sold on the deal. Well, I have literally a month and a half to buy from them before I get taxed as if I'm going to the local bookstore. And sometime last year, I started buying household items like shoe polish, bike parts, clothing, etc from Amazon as well. For me, a bulk of my Amazon purchases are really not necessities -- more like impulse buys or luxury items. A few dollars of taxes won't break me but it's the damn principle of having to pay more taxes. Screw 'em all.