On Amazon, you can pick up a 500 GB system with a physical copy of Mass Effect: Andromeda and a digital copy of Ghost Recon: Wildlands' Gold edition (a $100 version that includes the Deluxe edition and season pass) for $300. As an added bonus, Amazon is throwing in a $10 credit towards Amazon Music Unlimited (its Spotify-esque service) and $10 toward your next Amazon Video purchase.
If you'd prefer some choice in what you get, the Microsoft Store has an alternative offer that's arguably even better. You can pick from any of the store's Xbox One bundles--including those with larger hard drives or recent games like Halo Wars 2--and choose free two games from a limited selection.
The first of these pools consists primarily of older games, although there are some worthwhile options, including Rainbow Six Siege. The second expands to have more recent choices, including Andromeda, For Honor, Halo Wars 2, Watch Dogs 2, and Final Fantasy XV.
Additionally, the Microsoft Store has some other offers when you buy an Xbox One. You can take $10 off the price of three months of Xbox Live Gold, $10 off a controller, and $50 off an Elite controller.