A high-quality 4K television can bring out the best in movies, gaming, and live sports, and right now, the Roku Pro Series 55-inch 4K TV might be the best deal of any TV on Amazon. This smart TV, which naturally features Roku's top-tier smart platform, comes with vibrant colors and deep contrast, provided by the QLED technology. However, high-end technology doesn't need to break the bank, as is evident from the discounted price of this TV, $598. This is a hefty 34% less than its usual $899.99 price tag, admittedly not very high for a QLED TV either. Needless to say, with the lowest price ever on Amazon, this is the best opportunity to grab this 55-inch QLED TV.