ErligpowhtDirect via Amazon offers two Aromatherapy 120ml Essential Oil Diffusers for $22.99. Coupon code "SINXDRJF" drops it to $14.99. Plus, Prime members bag free shipping. That's tied with our November mention and the lowest price we could find by about $14. It features LED lighting with seven colors, automatic shutoff, and 120ml tank. Deal ends January 31.