Exclusively for Amazon Prime members, this Insignia 70" 4K Fire TV Edition Smart TV (model NS-70DF710NA21) drops to the all-time low price of $479.99 with free shipping from Amazon. That's $20 less than the next best price. This TV has a 4K display with built-in WiFi and Fire TV for streaming entertainment. Don't have Prime? You can sign up here for a free 30-day trial. Other sizes of the same model TVs are also on sale.Sales tax is charged in most states.