Gooloo via Amazon offers its Gooloo Dimmable 40-LED Desk Lamp in Black for $28.99. Coupon code "R7QT4PCJ" cuts it to $23.77. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $7.37.) That's $56 off list and the lowest total price we could find. It features three color temperature modes, stepless dimming control, a 40-minute auto-shutoff timer, tilt and swivel adjustment, and touch-sensitive control panel. Deal ends March 31.