The Microsoft Surface Pro 4 (128GB/Core i5 variant) has received a $150 price cut, again. The tablet, which usually sells for $999, currently costs just $849. The device sports a 12.3-inch display, has 4GB RAM, and comes with Surface Pen as well. It runs Windows 10 Pro. The deal runs through August 27, 2016. Not only this, you can also save another $50 if you purchase the Surface Dock with the tablet - this is valid until September 3. Source
Source: http://www.gsmarena.com/microsoft_offering_150_discount_on_surface_pro_4_128gb_core_i5-news-19844.php