I purchased this diffuser many many years ago and had strored it inside one of my closets on the top shelf.  It has always been stored inside a climate controlled non smoking environment and has never been used. The box shows some wear and a stain on the outside that does not affect anything inside. All pieces including the owners manual are in the box as it was never used. Aroma pro is a true Essential Oil Nebulizing Diffusor, top of the line quality and performance. Most Diffusors use water or heat and are not as pure or effective as a Nebulizer. See the description below:
Nebulizing Diffusers (Waterless): These use pressurized air and specialized jet nozzles to break pure essential oil into a micro-fine, undiluted mist. Because they don't use water or heat, they provide the strongest and most therapeutic aromatic experience
The solid metal blue piece has a few nicks on the bottom from moving the box around over the years. It cost me $120 when purchased. It is priced to sell. The shipping cost includes safe packing, insurance, prompt shipping and tracking number. Buy with confidence, see my feedback. Good listening, SonnY :)