If you shop at Amazon.com you can get an additional 1.57% (that's Pi/2) off your order. Just do any web search using their A9.com web search box on the left side of the page. Then return to Amazon.com. Now the Amazon.com logo at the top of the page should be changed to indicate Pi/2. If you place an item in your shopping cart and go to checkout you'll see the 1.57 discount applied. Not very much, but it's easy enough and every little bit helps.