MallStop via Amazon offers the refurbished Roku 4 4K Wireless Streaming Media Player for $51.99 with free shipping. That's $2 under our March mention and $21 below the lowest price we could find for it new. It streams 4K HD content and features 802.11ac dual-band wireless, voice control, and HDMI.

Note: A minimum 90-day warranty applies per the product page.