XIAOMI MI AIR PURIFIER FOR SALE. The Purifier is only 3 months old only and the filter is in good condition. (New Filters are 149 rmb if you wish to buy a new one from the Xiaomi website) Its a great product and we are very satisfied with it. Demand is high, and its mostly sold out/wait list on websites. We are selling it as we are leaving Beijing in a weeks time. So, Pick up this week is PREFERRED. PRICE - 750 rmb !!! (Including Filter, Power Cable, Invoice, Valid Warranty, Start guide in English)