Husband bought this without checking with me. It looks nice and modern, but this is not my taste. I ended up buying another brand (Tracs) that has fit in more with our apartments decor. Its just a bit too modern looking for my taste (husband is a geek). Anyway, its siting around not doing us any good, so I'd like to sell it. New, it is 12500 RMB but you can save 4000 RMB buy getting this almost new machine. We put it back in the box, and it looks and works like new. Sacrifice. Its filters are long lasting, and the machine has a built in indicator to let you know when its time to get new ones. It has gotten top reviews for being one of the fastest and quietest machines on the market, with a HEPA filter that removes not only air pollution, but also chemicals such as formaldehyde.