HaMi via Amazon offers its HaMi 5-watt 18-LED Cordless Desk Lamp for $12.99. Coupon code "6FI8OZLP" drops that $6.24. Plus, Prime members receive free shipping. That's tied with our November mention and the lowest price we could find by about $10. It features three light settings and lasts from three to nine hours per charge, depending on which light intensity setting you use. Deal ends October 31.