Ending today, Monoprice offers the TiVo Bolt 500GB Unified Entertainment System for $299.99. Coupon code "BFWKD" cuts the price to $254.99. With around $10 for shipping, that's the lowest total price we could find by $34. This 4K-compatible streaming media player/DVR features 802.11ac wireless and records up to four shows at once.
Of note, it's available in a 1TB model for $399.99 before the above coupon, $339.99 after, plus around $10 for shipping. That's the lowest total price we could find by $49.