Razer launched a new white model of its Wolverine V3 Pro wireless controller for Xbox and PC today, and if you act fast, you can save 30% on the pro controller at Amazon. The discount drops the price from $200 to just $140 when you click the coupon code check box on its Amazon store page. This is a massive discount, especially for a newly released controller like this, but we're not sure how long the deal will be available, so grab it while you can. Note that the coupon appears to be...