Electronic Express via Rakuten offers the TCL 55" 4K HDR Flat LED Ultra HD Roku Smart TV for $579.99. Coupon code "EE90" drops that to $489.99. With free shipping, that's tied with our mention from a week ago as the lowest price we've seen. (It's the best deal now by $90.) Deal ends March 12. Features include: 3840x2160 (2160p) native resolution HDR with Dolby Vision 802.11ac wireless built-in Roku TV (with access to Netflix, Amazon Instant Video, Hulu Plus, more) 3 HDMI inputs Note: This coupon can only be used once per account. (You must be signed in to use it.)