1. buy at $149 2. speak to a salesman and price match with walmart to $129.95 3. play "challenge google" for one minute and get $25 gift card, and apply to your order.
It's YMMV. I went to a MS store got my 521 last week. The hot latino girl only allowed one discount. You can choose either price match, 25off or 10% student discount. And she told me it's mentioned to them by the manager.