I saw few from Electrical app shops selling the Panasonic one, they always comes with offer when you purchase panasonic aircon. btw here is some info for a reviewer commenting on sharp air purifier

http://jasonmumbles.com/2011/08/adv-sharp-...ion-technology/

I am actually using this

Tested effectively remove odor in my room. Personal experienced this, my little cat sick and cirit-birit at my car porch, the ammonia smell make entire living room (rented one) very "yucks", so I tested the sharp  by turning it for 30 minutes, after out from bath, fresh air remain in my room