The entire first season of Dragon Ball Z is currently free on the Microsoft Store. Additionally, you can get the rest of the seasons at a discount as part of the Microsoft Store's big anime sale.
All you need to do to get the first season in high definition for free is go to the Microsoft Store, double-check that it's still free, and then click "Buy season." It will then be available to watch on any Windows 10, Windows 8, Xbox One, and Xbox 360 device.
Seasons 2 through 9 are all discounted up to 50 percent off. You can pick up Seasons 2, 3, 4, and 5 in HD for $20 each, while 6, 7, 8, and 9 can be purchased in standard definition for $11 a season--they're not currently available in HD. The first five seasons are also available in SD at $11 each.
The Dragon Ball Z movies are on sale as well. Resurrection F is available for $6, while Battle of the Gods currently costs $10.
You can check out the rest of Microsoft's Anime Month sale here. There are a ton of deals on other anime series and movies like Bleach, Ghost in the Shell, and Cowboy Bebop. Additionally, you can take advantage of more free offers on series like Digimon, Yu-Gi-Oh, and Beyblade.
In video games, Dragon Ball Z's next game, Xenoverse 2, is set to release on October 25 for PS4 and Xbox One and October 28 for PC. Its $150 collector's edition features a 13-inch Super Saiyan Goku statue.