Microsoft started selling the most affordable Surface Laptop earlier this year. This entry-level Surface Laptop with Intel Core m3 processor is now available for just $699, $100 down from its launch price. Intel Core m3 processor should be good enough for notetaking, web surfing, email, and basic everyday tasks. And the Intel HD Graphics 615 graphics chip should be powerful enough for watching HD videos and some light weight games.
You can get the deal here from Microsoft Store. Please note that this cheapest Surface Laptop is available only in Platinum color.