VicTsingDirect via Amazon has VicTsing Mini Electric Aromatherapy Essential Oil Diffuser w/ 7-Color Light on sale for $11.99 when you apply the promo codes listed below. Shipping is free with prime or on orders of $49 or more.

Light Wood Grain Color $19.99 - $8 w/ promo code O2X5V8E8 = $11.99
Dark Wood Grain Color $19.99 - $8 w/ promo code RIMKJI9L = $11.99