Entertainment 8 years ago Seiki 50-Inch 4K TV Eyes-On: How Can A TV This Beautiful Be So Cheap? Mario Aguilar Yesterday, Chinese OEM Seiki officially priced its 50-inch Ultra HD TV at $US1500, making it the cheapest 4K television in the history of absurd resolution. Cheaper even than the last round of super-cheap Chinese 4Ks we saw.