The Amazon Fire TV Stick 4K is sale for $39.99 as part of Amazon’s huge Spring Sale on devices. The Fire TV Stick 4K is the most powerful streaming device Amazon currently sells. Even if you don’t have a 4K TV, it is highly recommended to pay the extra $10 to get this model instead of the regular Fire TV Stick, which is currently on sale for $29.99. The extra power, among other improvements, is well worth the extra money. All Fire TV models now come with the new Alexa voice remote with power and volume buttons built-in, so that’s no longer a major reason to get the Fire TV Stick 4K over other models. Also on sale is the Fire TV Cube for $79.99 and the Fire TV Recast for $189.99.