Here are some instructions and details: nearly all the Windows PCs at the Microsoft Store online are eligible. The promotional offer is valid right-now until February 18, 2013; the purchase must be made on PCs with value over $699 — note that if you try to buy 2 $499 computers the voucher will not appear –. The $100 coupon will be delivered to you by February 19, 2013 and you must use it before March 17, 2013. And the store credit will appear automatically at the cart before checking out. Also if you’re looking to get a discount in a Surface Pro purchase, Staples is offering $75 discount  when you buy a new Surface Pro or RT through February 14th. Via Neowin All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.