If you currently own any Surface, Microsoft wants to reward your loyally and help you upgrade to a Surface Pro 3. Thanks to a new promotional offer the company is running, they will give you up to $650 towards the purchase of a new device.
Here's the deal, if you have a Surface and want to buy a Pro 3, head over to this website and you can get your current device apprised. The downside here is that unless you are looking to upgrade your current Pro 3 to a Pro 3 with an i7, you won't be getting anywhere close to the $650 mark.
For example, a maxed out Surface Pro 2 will net you $361 and if you have a Surface RT, you will only get about $84 for your working device. The promotion runs from 2/15/2015 to 3/8/2015 and is only available in the US, Canada is not included in this promotion.