Today only, Best Buy via eBay offers the Dell S2719DM 27" 1440p HDR Flat IPS LED-Backlit LCD Ultrathin Monitor for $269.99. Coupon code "PHLDAYTEN" drops it to $242.99. With free shipping, that's $27 under our mention from earlier this week and the lowest price we've seen. (It's the best deal today by $92.) It's 5.5mm at its thinnest and features a 2560x1440 native resolution and two HDMI inputs.