Amazon currently has the Samsung Hmd Odyssey Windows Mixed Reality Headset (with two controllers) on sale for just $399. That is good for $100 off of its regular price, and makes this a good pick up right now, considering this mixed reality headset has really never dropped in price.
This mixed reality headset does work off of a Windows PC, so you are going to need a Windows PC to use this. But it has built-in AKG headphones, for some great sound, and it also has 360-degree spatial sound, so you can hear when someone is sneaking up on you. This mixed reality headset is going to allow you to imagine the thrill of VR combined with the phenomenal sense of presence. You'll be able to escape to a world of immersive and exhilarating experiences. Now, this is a mixed reality headset, so it is mixing augmented reality with virtual reality, for a really cool experience. As mentioned, you will need a Windows PC to use this mixed reality headset, and Samsung does offer up a PC that works with it. Obviously, this Samsung PC is going to be the best option, seeing as it is made for the Samsung Odyssey and will be better optimized for the headset, so you can get the best experience with the Odyssey.
This item is also eligible for Amazon Prime's free shipping. Which includes free two-day shipping, and pretty cheap (usually $3.99) next-day shipping if you need it extra fast. If you are not an Amazon Prime member yet, you can sign up for a free trial of Amazon Prime. You'll get 30 days free (if you're a student, you get 6 months), and then it's $119/year (or $59/year for students). Prime members do get a whole lot more than just free shipping though, so be sure to check out the full benefits.