well after reading everyones posts about the ionic breeze, i think i am the most qualified to answer questions about them since i work for Sharper Image in NJ for about 6months now. Their is a promotion going on that if u buy 1 at regular price u can get the 2nd one for half off which comes to $556.42 including tax. Their are 2 sizes and 2 different colors. The big one works for 12X20 rooms and the small works for 10X12, and the big ones are only $50 more. The Ionic Breeze Quadra is the most popular selling product ever made by sharper image, and it really works since i have 2 in my house. They are good for removing cigarette smoke, dust,animal hairs,food odors,etc. It used to be 1 yr warranty but they upped it to 3 yrs. Usually when u buy 2 quadras and when u give the salesperson ur home address Sharper Image sends u a coupon in the mail for free plug-ins which are worth $69. If anyone has any questions about them or any orher product fell free to msg me.